CN203129132U - Pneumatic rapid pore-forming composite pile - Google Patents
Pneumatic rapid pore-forming composite pile Download PDFInfo
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- CN203129132U CN203129132U CN 201320113024 CN201320113024U CN203129132U CN 203129132 U CN203129132 U CN 203129132U CN 201320113024 CN201320113024 CN 201320113024 CN 201320113024 U CN201320113024 U CN 201320113024U CN 203129132 U CN203129132 U CN 203129132U
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Abstract
A pneumatic rapid pore-forming composite pile is characterized in that a pneumatic impact rock drilling process is adopted for achieving rapid pore forming, and a cast-in-situ concrete lower pile body and a rigid-flexible upper pile body are constructed; the rigid upper pile body is a tube pipe, I-beam or precast pile; the flexible upper pile body is filled with sand, gravels or cement mortar, and wraps the rigid upper pile body; pile diameter of the composite pile is 500-1000mm; and thickness of the flexible upper pile body is 50-150mm. Compared with the prior art, the pneumatic rapid pore-forming composite pile has the advantages that for pile forming in a backfilling area of an ultra-thick layer containing boulders, speed is increased tenfold as compared with that of conventional impact drilling; cost is lower than that of using reinforced concrete for filling the pile body; and more importantly, cement in the pile body concrete is prevented from being taken away by runoff of the backfilling layer to further affect pipe body quality.
Description
Technical field
The utility model relates to the building foundation engineering field, relates in particular to a kind of pneumatic fast pore-creating compound pile.
Background technology
Along with China's urban construction scale constantly enlarge and the red line that can not touch in " 1,800,000,000 mu of arable lands " under, seek the soil that can be used for building, become the almost thing worried about most of each city manager of China.Especially the mountain marine reclamation land is all had to explode in the coastal cities of China's an inch of land is an inch of gold.Small hill on the limit, bay cuts into a mountain and blows out, and explodes big and small piece stone and the earth that, and the various building wastes that inside the city ship, from the bank to beach progressively toward filling out in the sea, rice is thick surplus the backfill number of plies rice to tens, 20.Drive piles at such ground, there are the following problems in meeting, and the preformed pile of squeezing into, pile tube can stop because of the boulder of one, two rice diameters that accompany in the fill stratum, can't construct.As adopt bored pile, and can only use Churn drill, and be used for a jump bit to several tons of weights of pore-forming, when the boulder that runs into greater than diameter more than a meter, can cause inclined hole and card hammer.
The utility model content
The utility model provides a kind of pneumatic fast pore-creating compound pile, can be in the ground of the huge thick back fill course that contains big or huge boulder, energy fast pore-creating and pile, can also guarantee into hole perpendicularity control within the national regulation requirement, the soil layer water in the huge thick beach ooze layer that underlies, can constantly discharge along the back-up sand layer of last pile body, promote soil layer to solidify, improve the bearing capacity of stake.
The technical solution adopted in the utility model is: a kind of pneumatic fast pore-creating compound pile, it is characterized in that, and adopt Pneumatic immpacting rock drilling technology fast pore-creating, the following pile body of cast-in-situ concrete and the last pile body of hard and soft combination; The last pile body of rigidity is pile tube or i iron or preformed pile; Flexible last pile body is back-up sand or gravel or cement mortar, and pile body is wrapped in pile body on the rigidity on the flexibility, compound pile stake footpath 500-1000mm, the thick 50-150mm of pile body on the flexibility.When pile body on the flexibility was cement mortar, underground should not have river rising in Ningxia and flowing into central Shaanxi stream environment.
A kind of piling method of pneumatic fast pore-creating compound pile may further comprise the steps successively:
(1), crawler type or walking aeratic hidden hole hammer are stood on the stake position;
(2), start the upper and lower unit head that hangs on the supporting air compressor machine of rig and the rig column.Last unit head drives long screw drill rod, connecting the down-the-hole hammer under the long screw drill rod, compressed air acts on the down-the-hole hammer by the cavity at drilling rod center, makes tup high-frequency percussion rock, rock is broken into stone flour and rock ballast rapidly, takes ground out of by the helical blade that is on the long screw drill rod that is rotated counterclockwise; Following unit head drives the steel sleeve driving that turns clockwise, and steel sleeve lower end ring bit is inlaid with alloy bit, and down-the-hole hammer diameter is less than steel casing internal diameter 2cm, and stake is directly than the big 2cm of steel casing external diameter, with steel casing lower end ring bit equal diameter;
(3), cut a hole top backfill layer or boulder bed when the jump bit tup dashes, entered bearing stratum, reach projected depth after, carried in the steel casing by last unit head and to unload long screw drill rod and down-the-hole hammer;
(4), in the steel casing, pour into the conduct concrete of pile body down;
(5) with the pulley suspension hook on the rig column, sling pile tube or i iron or preformed pile insert in the steel casing concrete;
(6), between the pile tube or i iron or preformed pile in steel casing and tube, pour into sand or gravel or cement mortar, and irritate on the limit, vibrating hammer exciting steel casing is hung by crane in the limit, carries the steel casing while shaking to ground, namely finishes a pneumatic fast pore-creating compound pile;
(7), go round and begin again, finish all pneumatic fast pore-creating compound piles.
A kind of pneumatic fast pore-creating compound pile compared with prior art, has obvious superiority: pile in the backfill zone of the huge thick-layer that contains boulder, can more conventional Churn drill, the speed tenfold improves, pour into (because being end bearing pile, reinforcing cage is elongated) with pile body with steel concrete, cost is low, the main river rising in Ningxia and flowing into central Shaanxi of having avoided backfill layer fails to be convened for lack of a quorum and takes away cement in the pile concrete, and influences pile quality.
The utility model is described in further detail below in conjunction with accompanying drawing and the specific embodiment.
Description of drawings
Fig. 1 is a kind of exemplary embodiments generalized section of the utility model.
Drawing explanation: 1. backfill layer, 2. back-up sand or gravel, 3. pile tube, 4. boulder bed, 5. rock stratum, 6. pile body under the concrete.
The specific embodiment
As shown in Figure 1: a kind of piling method of pneumatic fast pore-creating compound pile may further comprise the steps successively:
(1), crawler type or walking aeratic hidden hole hammer are stood on the stake position;
(2), start the upper and lower unit head that hangs on the supporting air compressor machine of rig and the rig column.Last unit head drives long screw drill rod, connecting the down-the-hole hammer under the long screw drill rod, compressed air acts on the down-the-hole hammer by the cavity at drilling rod center, makes tup high-frequency percussion rock, rock is broken into stone flour and rock ballast rapidly, takes ground out of by the helical blade that is on the long screw drill rod that is rotated counterclockwise; Following unit head drives the steel sleeve driving that turns clockwise, and steel sleeve lower end ring bit is inlaid with alloy bit, and down-the-hole hammer diameter is less than steel casing internal diameter 2cm, and stake is directly than the big 2cm of steel casing external diameter, with steel casing lower end ring bit equal diameter;
(3), cut a hole backfill layer (1), boulder bed (4) when the jump bit tup dashes, and enter rock stratum (5), reach projected depth after, carried in the steel casing by last unit head and to unload long screw drill rod and down-the-hole hammer;
(4), in the steel casing, pour into the conduct concrete of pile body (6) down;
(5) with the pulley suspension hook on the rig column, the pile tube of slinging (3) inserts in following pile body (6) concrete of steel casing bottom;
(6), between the pile tube in steel casing and tube, pour into back-up sand (2), and limit filling, limit hang vibrating hammer exciting steel casing by crane, carries the steel casing while shaking to ground, namely finishes a pneumatic fast pore-creating compound pile; Go round and begin again, finish all pneumatic fast pore-creating compound piles.
Claims (1)
1. a pneumatic fast pore-creating compound pile is characterized in that, adopts Pneumatic immpacting rock drilling technology fast pore-creating, the following pile body of cast-in-situ concrete and the last pile body of hard and soft combination; The last pile body of rigidity is pile tube or i iron or preformed pile; Flexible last pile body is back-up sand or gravel or cement mortar, and pile body is wrapped in pile body on the rigidity on the flexibility, compound pile stake footpath 500-1000mm, the thick 50-150mm of pile body on the flexibility.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320113024 CN203129132U (en) | 2013-03-01 | 2013-03-01 | Pneumatic rapid pore-forming composite pile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320113024 CN203129132U (en) | 2013-03-01 | 2013-03-01 | Pneumatic rapid pore-forming composite pile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203129132U true CN203129132U (en) | 2013-08-14 |
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ID=48937127
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320113024 Expired - Fee Related CN203129132U (en) | 2013-03-01 | 2013-03-01 | Pneumatic rapid pore-forming composite pile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203129132U (en) |
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2013
- 2013-03-01 CN CN 201320113024 patent/CN203129132U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130814 Termination date: 20200301 |
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| CF01 | Termination of patent right due to non-payment of annual fee |