CN105239562A

CN105239562A - Hole-forming pouring pile

Info

Publication number: CN105239562A
Application number: CN201510618589.6A
Authority: CN
Inventors: 黄国庆
Original assignee: Individual
Current assignee: Individual
Priority date: 2015-09-25
Filing date: 2015-09-25
Publication date: 2016-01-13
Anticipated expiration: 2035-09-25
Also published as: CN105239562B

Abstract

Disclosed is a hole-forming pouring pile. The hole-forming pouring pile comprises a pile body; a prefabricated concrete pile wall is arranged on the periphery of the pile body and formed by concrete pipes assembled by a plurality of prefabricated concrete pieces or mixed concrete pipes and prefabricated concrete pipes assembled by the multiple prefabricated concrete pieces and serves as a wall protecting system for pile holes during pile forming; concrete expanded bodies are arranged on the outer side of the pile or at the bottom of the pile or on the outer side and at the bottom of the pile; the concrete expanded bodies of the outer side of the pile are prefabricated concrete building blocks; the concrete expanded bodies of the bottom of the pile are formed after finishing hole bottom dry operation which is performed in the pile holes of the prefabricated concrete wall protecting system of the hole walls of the pile body. By means of the hole-forming pouring pile, the problem that pile forming is hard to achieve or can not be achieved in terms of existing dry operation hole-forming pouring piles in soft soil layers, quick sand soil layers and water-contained soil layers can be solved, the pile body bearing capacity and the pile body stability are improved to the maximum degree, and the pile foundation cost can be reduced extremely.

Description

A kind of pore-creating filling pile

Technical field

The present invention relates to a kind of pore-creating filling pile in pile foundation.

Background technology

Existing pore-creating filling pile (non-Squeezing Soil Pile) mainly contains dry operation pore-creating filling pile, mud off pore-creating filling pile, casing pipeholing casting stake.Dry operation pore-creating filling pile has the pore-creating filling piles such as manually digging hole, length or short spiral, mechanically drived luoyang shovel, and the concrete piles quality of dry operation pore-creating filling pile controls well, can make full use of bearing capacity of foundation slab, and without mud construction, environment is good; Mud off pore-creating filling pile has diving boring, just or the mud off such as reverse circulation drilling, spiral-digging pore pore-creating filling pile, handles underwater concrete pouring after sediment well, wide adaptability; Casing pipeholing casting stake has Benoto castinplace pile (percussive grabbing boring), SaperTop engineering method, short screw-feed boring castinplace pile etc., and general anhydrous perfusion concrete (also having underwater grouting), wide adaptability, quality better controls.

The deficiency of existing pore-creating filling pile: the expanding body of concrete that mud off pore-creating filling pile and casing pipeholing casting stake are not generally formed in stake side, the expanding body of concrete at the bottom of stake at the bottom of expanding formation stake is also more difficult; Existing dry operation pore-creating filling pile is difficult to or cannot pile in soft soil layer, quicksand formation and water bearing ground, and compliance has great limitation; Dry operation manually digging hole pore-creating filling pile except weak soil, quicksand and water bearing ground adapt in stratum, formed pile lining with Cast-in-place concrete retaining wall cylinder, generally also there is no the expanding body of the concrete of a side, and speed of application be slow.

Summary of the invention

Technical problem to be solved by this invention is: provide a kind of pore-creating filling pile, this can solve existing dry operation pore-creating filling pile and to be difficult at soft soil layer, quicksand formation and water bearing ground or cannot the problem of pile, and has increased substantially bearing capacity and the pile body stability of pore-creating filling pile.

The technology used in the present invention solution is: a kind of pore-creating filling pile, comprise pile body, the outer of described pile body is arranged with Prefabricated Concrete pile lining, described Prefabricated Concrete pile lining is made up of the assembled concrete pipe of some Prefabricated Concrete sheets or mixed by the assembled concrete pipe of some Prefabricated Concrete sheets and Prefabricated Concrete pipe, this Prefabricated Concrete pile lining is a part for pile body, is the retaining wall protection system of stake holes when pile operation; Be provided with the expanding body of concrete outside described stake or at the bottom of stake or outside stake He at the bottom of stake, the expanding body of the concrete outside described stake is Prefabricated Concrete contract block, and Prefabricated Concrete contract block is corresponding with Prefabricated Concrete sheet to be arranged, and is longitudinally pressed in foundation soil outside stake, with fixing mounted concrete sheet; The expanding body of concrete at the bottom of described stake is completing the expanding body of concrete done operation at the bottom of the hole of carrying out in the stake holes of pile body hole wall Prefabricated Concrete retaining wall system and formed.

The further technical scheme of the present invention is: 1, have grouting layer outside Prefabricated Concrete pile lining, and grouting layer is with can the cement paste of rapid solidification be formed slip casting outside Prefabricated Concrete pile lining, with fixing mounted concrete sheet and sealing.2, at the bottom of stake, boulder and cobble bearing stratum has injecting cement paste, and this injecting cement paste is when drilling construction is close to boulder and cobble bearing stratum, adopts slim hole drilling to arrive bearing stratum, carries out slip casting to boulder and cobble bearing stratum, can shutoff underground water and the supporting capacity improving bearing stratum.

Beneficial effect of the present invention: 1, this can solve existing dry operation pore-creating filling pile and to be difficult at soft soil layer, quicksand formation and water bearing ground or cannot the problem of pile; The expanding body of concrete piles of expanding formation at the bottom of the expanding or stake in the stake side of carrying out in the stake holes 2, under Prefabricated Concrete retaining wall system protection, also slip casting can be carried out according to Different Strata situation, make full use of foundation soil condition, at utmost improve pile body bearing capacity, pile body stability and reduce pile foundation cost; 3, bearing capacity of single pile is high, can the intensity utilizing concrete piles of higher degree, is convenient to design and lays out pile, can accomplish that one pile for one column saves laying out pile of cushion cap expense, particularly core shell part in soft foundation; 4, pour into concrete under anhydrous condition, concrete piles quality provides execution conditions to ensure; 5, without mud and construction noise little, environmental protection condition is good, has saved environmental protection disposal costs; 6, the assembled formation supporting of concrete sheet because adopting batch production prefabricated, can adopt do mechanization operation, speed of application is fast.Mixed economy and social benefit remarkable.

Below in conjunction with the drawings and the specific embodiments, the invention will be further described.

Accompanying drawing explanation

Fig. 1 is an embodiment of the present invention pile body schematic diagram.

Fig. 2 is the sectional view of a kind of embodiment of concrete pipe.

Fig. 3 is the stereogram of a kind of embodiment of Prefabricated Concrete sheet.

Detailed description of the invention

As shown in Figure 1, Figure 2, Figure 3 shows; the pore-creating filling pile that the present embodiment provides; the outer of its pile body is arranged with Prefabricated Concrete pile lining 1; Prefabricated Concrete pile lining 1 is made up of the assembled concrete pipe 7 of some Prefabricated Concrete sheets 8 or mixed by the assembled concrete pipe of some Prefabricated Concrete sheets and Prefabricated Concrete pipe; this Prefabricated Concrete pile lining is a part for pile body; it is the retaining wall protection system of stake holes when pile operation; the present embodiment adopts by the assembled annular concrete pipe of some Prefabricated Concrete sheets, and annular concrete pipe can adopt the Prefabricated Concrete sheet of same size or different size assembled (as shown in Figure 2).The expanding body of concrete is provided with outside described stake or at the bottom of stake or outside stake He at the bottom of stake, the expanding body of concrete in stake outside is Prefabricated Concrete contract block 3, Prefabricated Concrete contract block 3 is corresponding with concrete pipe 7 to be arranged, longitudinally be pressed in foundation soil outside stake, with fixing mounted concrete sheet 8, and improve pile body frictional force and pile body stability (raising slenderness ratio).The expanding body of concrete 6 at the stake end is completing the expanding body of concrete (this is expanding condition at the bottom of the incomparable stake of existing most of stake) done operation at the bottom of the hole of carrying out in the stake holes of pile body hole wall Prefabricated Concrete retaining wall system and formed, to make full use of foundation soil condition, at utmost improve bearing capacity of single pile and reduce pile foundation cost.Have grouting layer 4 outside Prefabricated Concrete pile lining 1, grouting layer 4, with can the cement paste of rapid solidification be formed slip casting outside Prefabricated Concrete pile lining 1, with fixing mounted concrete sheet 8 and sealing, improves the bearing capacity of stake simultaneously.Stake end boulder and cobble bearing stratum has injecting cement paste 5, and this injecting cement paste 5 is when drilling construction is close to boulder and cobble bearing stratum, adopts slim hole drilling to arrive bearing stratum, carries out slip casting to boulder and cobble bearing stratum, can shutoff underground water and the supporting capacity improving bearing stratum.

The construction method brief description of the present embodiment pore-creating filling pile is as follows: combine casing in pore-forming job step with dismantled and assembled steel (or steel concrete) and carry out advance support, drilling tool is selected to carry out creeping into and fetching earth, in weak soil, soft plastic clay or quicksand formation, advance support surmounts and creeps into the section of fetching earth, the concrete pipe of the assembled formation stake holes of batch production Prefabricated Concrete sheet is used in pore-forming job step rear end under advance support protection, as the concrete dado system of stake holes; In hole, removable annular hydraulic systems force advance support system is advanced, and middlely to be hammered into by the Prefabricated Concrete contract block preset in a side foundation soil or with the cement paste of rapid solidification carrying out the slip casting of concrete dado lateral wall to fix mounted concrete pipe concrete pipe is assembled; At drilling construction close in boulder and cobble bearing stratum, adopt slim hole drilling to arrive bearing stratum, slip casting is carried out to boulder and cobble bearing stratum, can shutoff underground water and improve the supporting capacity of bearing stratum; In the stake holes of existing concrete dado, carry out expanding body at the bottom of expanding formation stake at the bottom of hole, improve the bearing capacity of stake; Reinforcing cage is finally installed and pours into concrete pile in anhydrous conditions.

Claims

1. a pore-creating filling pile, comprise pile body, it is characterized in that: the outer of described pile body is arranged with Prefabricated Concrete pile lining, described Prefabricated Concrete pile lining is made up of the assembled concrete pipe of some Prefabricated Concrete sheets or mixed by the assembled concrete pipe of some Prefabricated Concrete sheets and Prefabricated Concrete pipe, this Prefabricated Concrete pile lining is a part for pile body, is the retaining wall protection system of stake holes when pile operation; Be provided with the expanding body of concrete outside described stake or at the bottom of stake or outside stake He at the bottom of stake, the expanding body of the concrete outside described stake is Prefabricated Concrete contract block, and Prefabricated Concrete contract block is corresponding with Prefabricated Concrete sheet to be arranged, and is longitudinally pressed in foundation soil outside stake, with fixing mounted concrete sheet; The expanding body of concrete at the bottom of described stake is completing the expanding body of concrete done operation at the bottom of the hole of carrying out in the stake holes of pile body hole wall Prefabricated Concrete retaining wall system and formed.

2. pore-creating filling pile according to claim 1, is characterized in that: have grouting layer outside Prefabricated Concrete pile lining, and grouting layer is with can the cement paste of rapid solidification be formed slip casting outside Prefabricated Concrete pile lining, with fixing mounted concrete sheet and sealing.

3. pore-creating filling pile according to claim 1 and 2, is characterized in that: at the bottom of stake, boulder and cobble bearing stratum has injecting cement paste.