CN1053480C - Technique and machine and tool for construction of hollow pedestal pile - Google Patents
Technique and machine and tool for construction of hollow pedestal pile Download PDFInfo
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- CN1053480C CN1053480C CN 95115942 CN95115942A CN1053480C CN 1053480 C CN1053480 C CN 1053480C CN 95115942 CN95115942 CN 95115942 CN 95115942 A CN95115942 A CN 95115942A CN 1053480 C CN1053480 C CN 1053480C
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- internal lining
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Abstract
The present invention discloses a construction technology and a tool for hollow pedestal piles, which is characterized in that an inner liner tube is manufactured first, and when a pile hole is drilled and dug, the inner liner tube sinks following the drilling and the digging processes. Meantime, a reinforcing cage is lowered downward, concrete is filled at the mouth of a well, and the drilling and the filling operations are carried out synchronously. The special tool comprises a power head and a central drilling tool provided with a drilling expansion drilling head, and is characterized in that an inner liner tube and a tube shoe are also arranged, wherein the lower end of the inner liner tube is connected with the tube shoe, and the central drilling tool is arranged in the inner liner tube. The present invention has the advantages of rapid construction, guaranteed quality, simple structure and easy use of the tool, etc., synchronously forms holes and piles, enhances work efficiency and lowers engineering cost, and the operation is finished when the drilling head drills to the bottom.
Description
The present invention relates to a kind ofly to be used for that heavy caliber is hollow, expanded bore pile construction process for bored pile and facility.
Hollow pile and expanded bore pile all belong to the benefit stake that can increase substantially folk prescription concrete bearing capacity.Widely adopt in Japan and American-European developed country, use seldom because of construction technology falls behind in China.By calculating as can be known, the bearing capacity of pile tip of solid pile design has only utilized about 20% of strength of the mixing pile, and potentiality also have greatly and can dig.
Conventional to bore construction hollow, expanded bore pile be pile in two steps, pours into behind the promptly first pore-forming.And be concrete perfusion under water, its workmanship is difficult to control.Especially clear the most obvious to the bearing capacity influence of stake not to the utmost with sediment.For safety, each state has all stipulated safety factor, and China gets 2.Therefore, the engineering quantity on the working drawing has half to establish for security consideration more.As pour into and can control on the face of land, safety factor can reduce, and gets 1.5 because the national standing order that has has.Coefficient drops to 1.5, can reduce by 25% engineering quantity, and its value can not be underestimated.
The objective of the invention is to overcome the deficiency of above-mentioned prior art and a kind of workmanship that can improve is provided, the construction technology and the facility thereof of hollow, expanded bore pile that again can extraordinary rapid construction.
Purpose of the present invention can take following measure to reach:
A kind of construction technology of hollow, expanded bore pile is characterized in that making earlier internal lining pipe, and when boring, digging a hole, internal lining pipe is heavy with boring, digging down, simultaneously descending reinforcing cage and at well head with concrete placing, bore to irritate and carry out synchronously.
Purpose of the present invention can also take following measure to reach:
Described internal lining pipe can be that prefabricated concrete pipe, steel pipe or cage bushing pipe, prefabricated concrete pipe outer wall have concaveconvex structure, and steel pipe can roll with steel plate, also can make template assembly.
Prefabricated concrete pipe or steel pipe are to fuse with unit head, at the center drilling tool and to bore the following limit of boring of guiding of enlarging aiguille heavy, and descending reinforcing cage simultaneously, and pour mortar into from well head and do the sealing material.Cage bushing pipe top flange is connected with unit head, and is heavy on the following limit of boring of the guiding of boring enlarging aiguille, pours the concrete material into from well head, and uses the shock club tamping.Carry out with shake or with digging immersed tube, descending reinforcing cage and following concrete placing at well head simultaneously with the method that shakes immersed tube or manually digging hole.If expanded bore pile then expands the end after solidifying with concrete, manually the go into the well end, expansion nation, bundle welding steel muscle are clearly built the chassis concrete.When creeping into, boring mud is sent into flushing liquor by the water inlet bend pipe, crosses annular space between internal lining pipe and the drilling rod, again through the drill bit mouth of a river, drilling rod center and Discharging bent-tube return the face of land.
Special-purpose construction equipment of the present invention comprises unit head, has the center drilling tool that bores enlarging aiguille, it is characterized in that also having internal lining pipe and shoe, and the lower end of internal lining pipe is connected with shoe, and the center drilling tool places in the internal lining pipe.
The described brill enlarging aiguille of special-purpose construction equipment of the present invention is bored by mother and counterboring is formed, and counterboring comprises steel body, connecting lever axle and block teeth, and block teeth are connected on the steel body by the connecting lever axle, and block teeth can be made one-directional rotation around the connecting lever axle.Welding-on two row's sintered carbide tool bits are stretched out by clockwise direction in the bottom of the block teeth of described brill enlarging aiguille, and the basil of front-seat cutlery is parallel with the block teeth sideline, and the basil of back row's cutlery is vertical with the block teeth sideline, and the last back of the body of block teeth is rotary with 30 ° of chamferings outwardly.
Because the present invention has taked above-mentioned technical measures, makes it to contrast prior art and has following advantage:
1, it can realize that pore-forming, pile are synchronous, realizes the good hope of " getting into end stake then becomes ", has improved efficiency of construction greatly, has reduced the cost of stake;
2, expand at the end in rock mass, be regardless of the stratum, the clear end, be regardless of the depth, sediment can slag to the greatest extent, bearing stratum can inspection, quality is directly controlled, and makes the crux operation of concealed work can expose construction, has guaranteed workmanship;
3, special-purpose machines and tools are simple in structure, install easily, remove good reliability, practicality height.
The drawing explanation of accompanying drawing:
Fig. 1 is the present invention's schematic diagram of constructing;
Fig. 2 is a cage bushing pipe structural representation;
Fig. 3 bores the enlarging aiguille structural representation.
The invention will be further described below in conjunction with embodiment:
With reference to accompanying drawing, on the walking-type pile driver pylon, mix rotary motive power head (1), as boring the dynamical system of irritating synchronous pile.Main tool is reinforcing cage (2) liner thin-walled concrete pipe or steel sheet pipe crimping (6), and the pipe inner tube of a tyre is gone into the center drilling tool before the following brill, and together lifts by crane after unit head (1) level is docked and goes into the well.Drill bit promptly bores enlarging aiguille (16) for the flexible primary-secondary drill of connecting lever shaft type.Counterboring (15) owing to turned to control to stretch out automatically, and bores (4) revolution detritus with mother under action of gravity, to widen female broken scope of boring (4), make drilling diameter equal to design the stake footpath, cage bushing pipe (9) is the just without hindrance extension of energy under the guiding of shoe (3), till the design elevation of going directly.When creeping into,, give much attention to and do not make hole wall exposed with concrete placing (5) from well head, with anti-collapse hole.Make drill bit have enough pressure to realize creeping into fast with cage with concrete.The advantage that deslagging then utilizes cage bushing pipe (9) top can both seal at the end is carried out forced anti-circulation, makes that surplus chi can stay De Genggao on the machine, reduces the cycle-index that connects reinforcing cage and internal lining pipe.Bore chance bad ground (mainly referring to hard obstacle) and be recoverable to drill bit change brill method, or dash or grab or dig, to obtain optimum efficiency.Expand the end and after hollow concrete piles is solidified, carry out, change manually the go into the well end, expansion nation, bundle welding steel muscle clearly into, build the chassis concrete.Because the sealing of cage bushing pipe boots is reliable, hollow pile is built with brill, has self-styled characteristics, and well water can be drained, and it is safe manually going into the well.
Being produced as follows of special-purpose machines and tools: unit head (1) is connected with the center drilling tool by moving flange, be connected with cage bushing pipe (9) by quiet flange on the casing, shoe (3) welds in advance with cage bushing pipe (9) bottom, when advancing with pipe bit, constantly topple over concrete material (5) from well head, boring mud is then sent into flushing liquor by water inlet bend pipe (18), crosses the annular space of internal lining pipe (6) and drilling rod, again through the drill bit mouth of a river, drilling rod center and Discharging bent-tube (17) return the face of land.This belongs to forced anti-circulation, can make on the machine surplus chi unrestricted, because of then improving pure brill time availability.With reference to Fig. 2, reinforcing cage (2) and internal lining pipe (6) can be made as one, i.e. cage bushing pipe (9).Reinforcing cage master muscle (10) is welded into one with flange (7) and internal lining pipe (6) (steel sheet rolls).Last lower flange connects with screw rod, and fixing collar (11) is inserted in bushing pipe in advance, welds by drawing predetermined distance and main muscle (10) then.Stirrup (8) is still pressed helix around bundle, and the main muscle between the cage bushing pipe welds with tying up muscle up and down.Like this, cage bushing pipe (9) just can bear the bigger power that rises.With reference to Fig. 3, the block teeth (12) that bore the counterboring (15) of enlarging aiguille are fixed on female drill steel body (14) with connecting lever axle (13).Adopt the uniform form of 3 block teeth (12) better (1 block teeth only draws among the figure).During the clockwise direction revolution, block teeth (12) are stretched out, but reaming is to cage bushing pipe shoe (3) internal diameter of following; During the counter-clockwise direction revolution, block teeth (12) draw in, and by female (4) detritus that bores, specification equals internal lining pipe (6) internal diameter.
Claims (9)
1, a kind of construction technology of hollow, expanded bore pile is characterized in that making earlier internal lining pipe (6), and when boring the stake hole, internal lining pipe (6) is with boring, simultaneously descending reinforcing cage (2) and at well head with concrete placing (5), bore to irritate and carry out synchronously.
2, the construction technology of hollow, expanded bore pile according to claim 1, it is characterized in that described internal lining pipe (6) can be prefabricated concrete pipe, steel pipe or cage bushing pipe (9), prefabricated concrete pipe outer wall has concaveconvex structure, and steel pipe can roll with steel plate, also can make template assembly.
3, the construction technology of hollow, expanded bore pile according to claim 1, it is characterized in that prefabricated concrete pipe or steel pipe and unit head (1) fuse, at the center drilling tool and to bore the following limit of boring of guiding of enlarging aiguille (4) heavy, descending reinforcing cage (2) simultaneously, and pour mortar into from well head and do the sealing material.
4, the construction technology of hollow, expanded bore pile according to claim 1, it is characterized in that cage bushing pipe (2) top flange (7) is connected with unit head (1), heavy on the following limit of boring of the guiding of boring enlarging aiguille (4), pour concrete material (5) into from well head, and use the shock club tamping.
5, the construction technology of hollow, expanded bore pile according to claim 1 is characterized in that expanding the end after solidifying with concrete, the end of manually going into the well clearly, expands nation, pricks the welding steel muscle, builds the chassis concrete.
6, the construction technology of hollow, expanded bore pile according to claim 1, it is characterized in that when creeping into boring mud is sent into flushing liquor by water inlet bend pipe (18), cross annular space between internal lining pipe and the drilling rod, through the drill bit mouth of a river, drilling rod center and Discharging bent-tube (17) return the face of land again.
7, a kind of facility that are used for the construction technology of described hollow, the expanded bore pile of claim 1, comprise unit head (1), have the center drilling tool that bores enlarging aiguille (16), it is characterized in that also having internal lining pipe (6) and shoe (3), the lower end of internal lining pipe (6) is connected with shoe (3), and the center drilling tool places in the internal lining pipe (6).
8, facility according to claim 7, it is characterized in that described brill enlarging aiguille (16) bores (4) by mother and counterboring (15) is formed, counterboring (15) comprises steel body (14), connecting lever axle (13) and block teeth (12), block teeth (12) are connected on the steel body (14) by connecting lever axle (13), and block teeth (12) can be made folk prescription to rotation around connecting lever axle (13).
9, facility according to claim 7, welding-on two row's sintered carbide tool bits are stretched out by clockwise direction in the bottom that it is characterized in that the block teeth (12) of described brill enlarging aiguille (16), the basil of front-seat cutlery is parallel with block teeth (12) sideline, the basil of back row's cutlery is vertical with block teeth (12) sideline, and the last back of the body of block teeth (12) is rotary with 30 ° of chamferings outwardly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95115942 CN1053480C (en) | 1995-09-20 | 1995-09-20 | Technique and machine and tool for construction of hollow pedestal pile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95115942 CN1053480C (en) | 1995-09-20 | 1995-09-20 | Technique and machine and tool for construction of hollow pedestal pile |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1121974A CN1121974A (en) | 1996-05-08 |
| CN1053480C true CN1053480C (en) | 2000-06-14 |
Family
ID=5080709
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 95115942 Expired - Fee Related CN1053480C (en) | 1995-09-20 | 1995-09-20 | Technique and machine and tool for construction of hollow pedestal pile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1053480C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104265174A (en) * | 2014-10-09 | 2015-01-07 | 胡刚锋 | Pile forming machine tool for drilling concrete pouring hollow pile |
| CN104895057A (en) * | 2015-05-15 | 2015-09-09 | 上海长凯岩土工程有限公司 | Big diameter steel pipe protective wall artificial digging-hole bottom expanding pile and building foundation reinforcement method |
-
1995
- 1995-09-20 CN CN 95115942 patent/CN1053480C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1121974A (en) | 1996-05-08 |
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| C14 | Grant of patent or utility model | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |