CN104099925A - Construction device for concrete pile and construction method thereof - Google Patents
Construction device for concrete pile and construction method thereof Download PDFInfo
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- CN104099925A CN104099925A CN201410357471.8A CN201410357471A CN104099925A CN 104099925 A CN104099925 A CN 104099925A CN 201410357471 A CN201410357471 A CN 201410357471A CN 104099925 A CN104099925 A CN 104099925A
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Abstract
The invention aims to provide a construction device for a concrete pile, and provides a construction method for the concrete pile through the construction device. The construction device of the concrete pile comprises a pile casing, an inner tube and a slender heavy hammer, and is characterized in that: the inner wall of the lower end of the pile casing is provided with a thickened layer; the height-adjustable inner tube is arranged in the pile casing; the bottom end of the inner tube is fixedly connected with an impact hammer; the height-adjustable slender heavy hammer is arranged in the inner tube; the bottom of the impact hammer is pointed cone which can penetrate through the thickened layer of the pile casing and project out of the pile casing; the middle of the impact hammer protrudes, cannot penetrate through the thickened layer of the pile casing and is blocked; the upper portion of the impact hammer is fixedly connected with the bottom end of the inner tube; the slender heavy hammer in the lifting inner tube is used for striking the top surface of the impact hammer to realize synchronous sinking of the impact hammer, the inner tube and the pile casing. The device further comprises a flat-bottom hammer boot which can be connected with the pointed cone at the lower end of the impact hammer.
Description
Technical field
The utility model relates to field of civil engineering, relates in particular to the construction technology of stake.
Background technology
In the ground of building is processed, often run into such situation, under earth's surface there are sandy soils that density is larger, crushed stone soil layer, loess formation, gravel boulder bed etc. in certain depth place, and hardness inequality, the uneven thickness of these soil layers.The pile body pore-forming of this geological conditions during to pile foundation construction causes great difficulty, and the modes such as at present conventional vibration sinking tube, static pressure or rotary drilling are all difficult to form a hole substantially to projected depth.Although rotary drilling rig and manually digging hole can be in harder soil layer pore-forming, but be all the method that original soil is taken out, not only need soil outward transport clearly to cause cost up and environment pollution, and owing to not making full use of original soil and there is no retaining wall, very easily cause hole wall collapse and undergauge, particularly, in the time that underground water content is higher, stake hole can intake very soon, cannot carry out lower step construction.
Summary of the invention
The present invention proposes in order to solve the above problems, object is to provide a kind of construction equipment of concrete pile, and provide a kind of simple, efficient construction method by this construction equipment, the disposable operation construction that completes retaining wall, pore-forming, pile, realizes the raising of work efficiency and the reduction of cost.
To achieve these goals, the construction equipment of concrete pile of the present invention includes casing, inner tube, elongated weight, it is characterized in that: the inwall of casing lower end is provided with the thickening layer of certain altitude, in casing, comprise liftable inner tube, inner tube bottom is fixedly connected with jump bit, comprises liftable elongated weight in inner tube; The bottom of jump bit is taper, the diameter of taper is less than the internal diameter at casing thickening layer position, and protrude at the middle part of jump bit, and the internal diameter that the diameter of protuberance is greater than casing thickening layer position is less than casing internal diameter, the top of jump bit and inner tube bottom are connected and fixed, and end face is plane; When the inner tube that insertion connects in casing and jump bit, jump bit bottom taper passes casing thickening layer and leans out outside casing, the protuberance at jump bit middle part can not be blocked through casing thickening layer, the elongated weight now promoting in inner tube impacts jump bit end face, can realize the synchronous sinking of jump bit and inner tube and casing; This device also comprises the plane bottom hammer boots that can be connected with jump bit lower end taper.
Best, in the construction equipment of above-mentioned concrete pile, the thickening layer of the inwall of casing lower end, is that steel-pipe welding with the steel bar of multiple same thickness and length or certain thickness and height is on casing inwall.
Best, in the construction equipment of above-mentioned concrete pile, jump bit is solid, forms with steel casting or forging.
Best, in the construction equipment of above-mentioned concrete pile, inner tube bottom and jump bit upper end connect as one, and when upwards promoting or sinking to inner tube, drive jump bit lifting simultaneously.
Best, in the construction equipment of above-mentioned concrete pile, the inside of inner tube is filled with steel cable or rubber cushion or coarse-fine aggregate etc., and one or more can alleviate the filler of ramming energy.
Best, in the construction equipment of above-mentioned concrete pile, with the plane bottom hammer boots that jump bit lower end taper is connected, referring to that shape is corresponding with jump bit cone coincide and bottom is flat steel hammer boots.
To achieve these goals, the present invention also comprises a kind of construction method of concrete pile, and the method adopts the construction equipment of above-mentioned concrete pile, and its step comprises:
1) construction equipment of above-mentioned concrete pile is aimed to the stake position in ground;
2) in inner tube, promote free-falling after elongated weight certain altitude, impact the end face of jump bit, make the squeezed surrounding soil of jump bit and drive casing to sink;
3) repeatedly carry out above-mentioned steps hammering punch operation 2., casing is drowned into projected depth;
4), according to soil layer property and upper load requirement, carry out the processing of stake end by one of following method:
Method A: 1. inner tube and jump bit are synchronously proposed outside casing, connect plane bottom hammer boots in jump bit bottom; 2. insert quantitative inserts to casing bottom; 3. inner tube and the jump bit that connects plane bottom hammer boots are inserted to casing and be depressed on inserts; 4. in inner tube, promote free-falling after elongated weight certain altitude, impact the end face of jump bit, make jump bit carry out squeezed to inserts; 5. repeatedly carry out above-mentioned filler and squeezed operation, diffuse in the stake end soil body until all the inserts of set amount is squeezed, form stake end and expand the end;
Method B: 1. inner tube and jump bit are synchronously proposed outside casing, connect plane bottom hammer boots in jump bit bottom; 2. inner tube and the jump bit that connects plane bottom hammer boots are inserted to casing, 3. in inner tube, promote free-falling after elongated weight certain altitude, impact the end face of jump bit, make jump bit carry out squeezed to the stake end soil body;
Method C: omit the construction sequence that stake end is processed, inner tube and jump bit are synchronously proposed outside casing, casing indwelling, in stake hole, is carried out to next step construction;
5) carry out the construction of pile body by one of following method:
Method A: 1. insert reinforcing cage; 2. press and fill with or fluid concrete; 3. propose casing, concrete is carried out to vibration compacting;
Method B: 1. by hollow drill pipe and high-pressure pump, pump cement mix on one side, rotary lifting drilling rod is until stake top mark is high on one side; 2. casing is proposed, anti-plug reinforcing cage in pile body;
Method C: 1. sink to precast pile; 2. propose casing, precast pile and around space are filled up with cement mixture or curing compound;
Method D: 1. insert quantitative inserts; 2. by the elevating movement of the above-mentioned jump bit or weight or the inner tamping tube that connect plane bottom hammer boots, inserts is rammed; 3. on, carry casing certain altitude, then carry out above-mentioned filling and ram operation; 4. repeatedly carry out proposing casing and filling and ramming operation until stake top mark is high on above-mentioned, in ground, form compacted pile body;
Method E: 1. pour into plain concrete high to stake top mark; 2. casing is proposed.
Best, in the construction method of above-mentioned concrete pile, above-mentioned steps 2) in, the weight of above-mentioned elongated weight, and the height of lifting weight, be to determine according to the requirement of soil property and impact energy.
Best, in the construction method of above-mentioned concrete pile, above-mentioned steps 4) in, in said method A and method B, insert quantitative inserts to casing bottom, inserts refers to one or more in harsh concrete or brickbat or rubble or dregs or cobble or slag or cement-soil or dirt.
Best, in the construction method of above-mentioned concrete pile, above-mentioned steps 5) in, in the time of employing method D and method E, after the construction of pile body completes, lay sandstone or concrete or reinforced concrete soil padding or first re-lay sandstone or concrete or reinforced concrete soil padding in the construction of stake jacking row wide diameter portion at stake top surface.
The construction equipment of above-mentioned concrete pile and the characteristics and advantages of construction method thereof are:
1. the fast efficiency of speed of fulfiling hole is high: impact jump bit by elongated weight, the taper of jump bit bottom directly acts on foundation soil body, produce the impact energy that is far more than foundation soil body ultimate bearing capacity, make the soil body or rock stratum produce impact failure and form stake hole, drive casing entirety to sink simultaneously; 2. hole quality is good: in the process of impact holing, jump bit drives casing to sink all the time, when casing plays retaining wall effect, the soil body being hit is all squeezed on a bottom, hole and hole wall, arrive in the compacted effect of reinforcing, therefore the solidness of the hole wall soil body is higher, avoids hole wall collapse and undergauge; 3. water sealing effect is good: after pile body pore-forming completes, needn't propose casing and can carry out lower step operation construction, even in the time that underground water content is higher, casing plays the effect of water shutoff all the time, avoids Groundwater infiltration in stake hole; 4. can work continuously: in whole work progress, all needn't propose casing, can also, by connect plane bottom hammer boots in jump bit bottom, can carry out the squeezed operation of filler of stake end; 5. applied widely: all applicable under the various geological conditionss such as weak soil, hard formation, interlayer, water content height, all applicable in pile foundation construction and composite foundation processing.
Brief description of the drawings
Fig. 1 is the elevation cross-sectional view of an embodiment of the construction equipment of concrete pile of the present invention;
Fig. 2 is the elevation cross-sectional view after the connection plane bottom hammer boots of an embodiment of the construction equipment of concrete pile of the present invention;
Fig. 3 is the process chart of an embodiment of the construction method of concrete pile of the present invention.
Detailed description of the invention
Fig. 1 is the elevation cross-sectional view of an embodiment of the construction equipment of concrete pile of the present invention, as shown in Figure 1, the inwall of casing 1 lower end is provided with the thickening layer 2 of certain altitude, in casing 1, comprise liftable inner tube 3, inner tube 3 bottoms are fixedly connected with jump bit 4, in inner tube 3, comprise liftable elongated weight 5, the bottom of jump bit 4 is taper, the diameter of taper is less than the internal diameter at casing thickening layer 2 positions, protrude at the middle part of jump bit 4, the internal diameter that the diameter of protuberance is greater than casing thickening layer 2 positions is less than casing 1 internal diameter, the top of jump bit 4 and inner tube 3 bottoms are connected and fixed with bolt, end face is plane, when the inner tube 3 that insertion connects in casing 1 and jump bit 4, jump bit 4 bottom tapers pass casing thickening layer 2 and lean out outside casing 1, the protuberance at jump bit 4 middle parts can not be blocked through casing thickening layer 2, the elongated weight 5 now promoting in inner tube 3 impacts jump bit 4 end faces, can realize the synchronous sinking of jump bit 4 and inner tube 3 and casing 1.
Fig. 2 is the elevation cross-sectional view of the connection plane bottom hammer boots of an embodiment of the construction equipment of concrete pile of the present invention, as shown in Figure 2, jump bit 4 lower end tapers and plane bottom hammer boots 6 are joined with bolts, and the shape of plane bottom hammer boots 6 is corresponding with jump bit taper coincide.
Fig. 3 is the process chart of an embodiment of the construction method of concrete pile of the present invention, and it comprises the steps, first, as shown in Figure 3 a, the construction equipment of above-mentioned concrete pile is aimed to the stake position in ground; Then, as shown in Figure 3 b, in inner tube 3, promote free-falling after elongated weight 5 certain altitudes, impact the end face of jump bit 4, make the squeezed surrounding soil of jump bit 4 and drive casing 1 to sink; Then, as shown in Figure 3 c, repeatedly carry out hammering punch operation, casing 1 is drowned into projected depth; Then, as shown in Figure 3 d, by outside inner tube 3 and the synchronous proposition casing of jump bit 4, connect plane bottom hammer boots 6 in jump bit 4 bottoms, insert quantitative inserts 7 to casing 1 bottom; Then, as shown in Figure 3 e, inner tube 3 and the jump bit 3 that connects plane bottom hammer boots 6 inserted to casing 1 and be depressed on inserts 7, in inner tube 3, promoting free-falling after elongated weight 5 certain altitudes, impact the end face of jump bit 4, make jump bit 4 carry out squeezed to inserts 7; Then, as shown in Fig. 3 f, repeatedly carry out above-mentioned filler and squeezed operation, diffuse in the stake end soil body until all the inserts 7 of set amount is squeezed, form stake end and expand the end; Finally, as shown in Fig. 3 g, insert reinforcing cage 8, fluid concrete 9, proposes that casing 1 is rear that concrete is carried out to vibration compacting, forms steel concrete pile body.
Claims (10)
1. a construction equipment for concrete pile, includes casing, inner tube, elongated weight, is characterized in that: the inwall of casing lower end is provided with the thickening layer of certain altitude, comprises liftable inner tube in casing, inner tube bottom is fixedly connected with jump bit, comprises liftable elongated weight in inner tube; The bottom of jump bit is taper, the diameter of taper is less than the internal diameter at casing thickening layer position, and protrude at the middle part of jump bit, and the internal diameter that the diameter of protuberance is greater than casing thickening layer position is less than casing internal diameter, the top of jump bit and inner tube bottom are connected and fixed, and end face is plane; When the inner tube that insertion connects in casing and jump bit, jump bit bottom taper passes casing thickening layer and leans out outside casing, the protuberance at jump bit middle part can not be blocked through casing thickening layer, the elongated weight now promoting in inner tube impacts jump bit end face, can realize the synchronous sinking of jump bit and inner tube and casing; This device also comprises the plane bottom hammer boots that can be connected with jump bit lower end taper.
2. the construction equipment of concrete pile according to claim 1, is characterized in that: the thickening layer of the inwall of casing lower end is that steel-pipe welding with the steel bar of multiple same thickness and length or certain thickness and height is on casing inwall.
3. the hole-forming device of a kind of concrete pile according to claim 1, is characterized in that: jump bit is solid, forms with steel casting or forging.
4. the construction equipment of concrete pile according to claim 1, is characterized in that: inner tube bottom and jump bit upper end connect as one, and when upwards promoting or sinking to inner tube, drives jump bit lifting simultaneously.
5. the construction equipment of concrete pile according to claim 1, is characterized in that: the inside of inner tube is filled with steel cable or rubber cushion or coarse-fine aggregate etc., and one or more can alleviate the filler of ramming energy.
6. the construction equipment of concrete pile according to claim 1, is characterized in that: with the plane bottom hammer boots that jump bit lower end cone is connected, referring to that shape is corresponding with jump bit taper coincide and bottom is flat steel hammer boots.
7. a construction method for concrete pile, the method adopts the construction equipment of the concrete pile described in the claims 1-6, comprises the steps:
1) construction equipment of the concrete pile described in the claims 1-6 is aimed to the stake position in ground;
2) in inner tube, promote free-falling after elongated weight certain altitude, impact the end face of jump bit, make the squeezed surrounding soil of jump bit and drive casing to sink;
3) repeatedly carry out above-mentioned steps hammering punch operation 2., casing is drowned into projected depth;
4), according to soil layer property and upper load requirement, carry out the processing of stake end by one of following method:
Method A: 1. inner tube and jump bit are synchronously proposed outside casing, connect plane bottom hammer boots in jump bit bottom; 2. insert quantitative inserts to casing bottom; 3. inner tube and the jump bit that connects plane bottom hammer boots are inserted to casing and be depressed on inserts; 4. in inner tube, promote free-falling after elongated weight certain altitude, impact the end face of jump bit, make jump bit carry out squeezed to inserts; 5. repeatedly carry out above-mentioned filler and squeezed operation, diffuse in the stake end soil body until all the inserts of set amount is squeezed, form stake end and expand the end;
Method B: 1. inner tube and jump bit are synchronously proposed outside casing, connect plane bottom hammer boots in jump bit bottom; 2. inner tube and the jump bit that connects plane bottom hammer boots are inserted to casing, 3. in inner tube, promote free-falling after elongated weight certain altitude, impact the end face of jump bit, make jump bit carry out squeezed to the stake end soil body;
Method C: omit the construction sequence that stake end is processed, inner tube and jump bit are synchronously proposed outside casing, casing indwelling, in stake hole, is carried out to next step construction;
5) carry out the construction of pile body by one of following method:
Method A: 1. insert reinforcing cage; 2. press and fill with or fluid concrete; 3. propose casing, concrete is carried out to vibration compacting;
Method B: 1. by hollow drill pipe and high-pressure pump, pump cement mix on one side, rotary lifting drilling rod is until stake top mark is high on one side; 2. casing is proposed, anti-plug reinforcing cage in pile body;
Method C: 1. sink to precast pile; 2. propose casing, precast pile and around space are filled up with cement mixture or curing compound;
Method D: 1. insert quantitative inserts; 2. by the elevating movement of the above-mentioned jump bit or weight or the inner tamping tube that connect plane bottom hammer boots, inserts is rammed; 3. on, carry casing certain altitude, then carry out above-mentioned filling and ram operation; 4. repeatedly carry out proposing casing and filling and ramming operation until stake top mark is high on above-mentioned, in ground, form compacted pile body;
Method E: 1. pour into plain concrete high to stake top mark; 2. casing is proposed.
8. the construction method of concrete pile according to claim 7, is characterized in that above-mentioned steps 2) in, the weight of above-mentioned elongated weight, and the height of lifting weight, be to determine according to the requirement of soil property and impact energy.
9. the construction method of concrete pile according to claim 7, it is characterized in that above-mentioned steps 4) in, in said method A and method B, insert quantitative inserts to casing bottom, inserts refers to one or more in harsh concrete or brickbat or rubble or dregs or cobble or slag or cement-soil or dirt.
10. the construction method of concrete pile according to claim 7, it is characterized in that above-mentioned steps 5) in, in the time of employing method D and method E, after the construction of pile body completes, lay sandstone or concrete or reinforced concrete soil padding at stake top surface, can also first re-lay sandstone or concrete or reinforced concrete soil padding in the construction of stake jacking row wide diameter portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410357471.8A CN104099925A (en) | 2014-07-25 | 2014-07-25 | Construction device for concrete pile and construction method thereof |
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| CN201410357471.8A CN104099925A (en) | 2014-07-25 | 2014-07-25 | Construction device for concrete pile and construction method thereof |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105735248A (en) * | 2016-03-14 | 2016-07-06 | 中冶成都勘察研究总院有限公司 | Construction method for guaranteeing that pile end of prefabricated pile enters bearing layer and improving bearing force |
| CN105926618A (en) * | 2016-04-15 | 2016-09-07 | 王继忠 | Construction method for prefabricated piles |
| CN109440770A (en) * | 2018-12-21 | 2019-03-08 | 江西联保工程咨询有限公司 | It is a kind of reduce piling construction noise draw a device |
| CN110863501A (en) * | 2019-11-27 | 2020-03-06 | 河南理工大学 | Device for filling coarse gravel core wall in reaming space and filling method using device |
| CN115094868A (en) * | 2022-07-18 | 2022-09-23 | 中铁广州工程局集团有限公司 | Rock stratum pore-forming construction method for oblique lock catch steel pipe pile |
| CN115262598A (en) * | 2022-07-18 | 2022-11-01 | 中铁广州工程局集团有限公司 | Construction method of lock catch steel pipe pile cofferdam for water-rich round gravel rock stratum |
| CN115324041A (en) * | 2021-05-11 | 2022-11-11 | 中部城市建设有限公司 | Construction process of root-reinforced pile |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105735248A (en) * | 2016-03-14 | 2016-07-06 | 中冶成都勘察研究总院有限公司 | Construction method for guaranteeing that pile end of prefabricated pile enters bearing layer and improving bearing force |
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| CN110863501A (en) * | 2019-11-27 | 2020-03-06 | 河南理工大学 | Device for filling coarse gravel core wall in reaming space and filling method using device |
| CN115324041A (en) * | 2021-05-11 | 2022-11-11 | 中部城市建设有限公司 | Construction process of root-reinforced pile |
| CN115094868A (en) * | 2022-07-18 | 2022-09-23 | 中铁广州工程局集团有限公司 | Rock stratum pore-forming construction method for oblique lock catch steel pipe pile |
| CN115262598A (en) * | 2022-07-18 | 2022-11-01 | 中铁广州工程局集团有限公司 | Construction method of lock catch steel pipe pile cofferdam for water-rich round gravel rock stratum |
| CN115262598B (en) * | 2022-07-18 | 2024-02-23 | 中铁广州工程局集团有限公司 | Construction method of water-rich round conglomerate rock stratum lock catch steel pipe pile cofferdam |
| CN115094868B (en) * | 2022-07-18 | 2024-02-23 | 中铁广州工程局集团有限公司 | Rock stratum pore-forming construction method for oblique locking steel pipe pile |
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Application publication date: 20141015 |