CN101126239A - Construction device and construction technique for concrete pipe base - Google Patents

Construction device and construction technique for concrete pipe base Download PDF

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Publication number
CN101126239A
CN101126239A CNA2007101394231A CN200710139423A CN101126239A CN 101126239 A CN101126239 A CN 101126239A CN A2007101394231 A CNA2007101394231 A CN A2007101394231A CN 200710139423 A CN200710139423 A CN 200710139423A CN 101126239 A CN101126239 A CN 101126239A
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casing
concrete
pile
interior pipe
pipe
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CNA2007101394231A
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CN101126239B (en
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张立军
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张立军
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Abstract

The invention discloses a construction device and the construction technology of a concrete pile foundation, which is applied to the construction of the foundation project of the bored concrete pile in the building field. The device comprises a top pressure type static pile pressing-in machine, a hydraulic cylinder connected with a pressure gauge a retaining cylinder connected with the top pressure type static pile pressing-in machine and an internal tube, the length of the internal tube is longer than that of the retaining cylinder; a flat head blanking plug is arranged at the lower end of the internal tube; a vibration device is arranged on the retaining cylinder and a feed inlet is opened on the side wall of the retaining cylinder. The key points of the construction technology are that: the builders rubbish is utilized to form a loose bearing platform at the bottom of the pile end, then the no-slump concrete is used for building a solid bearing platform on the loose bearing platform at the bottom of the pile end; a plurality of middle bosses are formed at the different heights of the pile; then the file is finished by lifting the internal tube, placing a reinforcing cage, casting and vibrating the concrete. The pile made according to the invention has high and uniform carrying capacity; the carrying capacity of the bearing platform can be read from a pressure gauge, which reduces the artificial error.

Description

A kind of construction equipment of concrete pipe base and construction technology
Technical field
The present invention relates to the construction equipment and the construction technology of the cast-in-place concrete pile that a kind of building field Foundation Design uses.
Background technology
The forming method of the ground cast-in-place concrete pile of construction work at present has a variety of, comprises two kinds of rammer expansion and static pressure.Existing compaction pile technology adopts weight to ram pore-forming; in ramming process; along with the decline casing of the weight of ramming and then descends the hole wall of stake is protected; form the stake hole, in the stake hole, insert building waste then, continue to ram; form stake end prose style free from parallelism force-bearing table in the lower end of stake; insert harsh concrete again in the stake hole, continue to ram a formation stake end solid force-bearing table, stake end prose style free from parallelism force-bearing table is born load of buildings with a stake end solid force-bearing table with pile body.The invention of Chinese patent CN1243159C discloses a kind of like this technology.Be widely adopted because this technology cost is low.But the technology of this pile foundation construction has following shortcoming: can produce vibration when 1, this process using weight is rammed, both influence the adjacent quality of having finished stake, produce certain harm to closing on building again.2, because when adopting this technology, its vertical bearing capacity of single pile can only be inferred and get by experience, and varies owing to geological conditions again, so to the poor reliability of the deduction of bearing capacity, construction quality is wayward.Therefore limited the development of himself.
Chinese patent CN1837505A discloses the job practices of a kind of static(al) extruded concrete stake, and its patent documentation attempts to solve vibration problem.But there is following shortcoming in this patent: according to the description of its patent content, when it inserts behind the masonry with the masonry in the interior pipe extruding outer tube in outer tube, in it pipe do not reach the outer tube bottom below, interior pipe just pushes masonry in outer tube, the pressure that shows on the pressure meter stops when reaching design load, the shortcoming of doing like this is: 1, because interior pipe lower end does not extrude the outer tube lower end, there is very big frictional force between filler in the outer tube and the outer tube at this moment, pressure meter reading at this moment, major part derives from this frictional resistance, form the higher illusion of pressure gauge reading, the pressure of practical function on the enlarged footing of stake bottom does not reach design load, cause the bearing capacity deficiency of pile foundation, form construction hidden danger.2, does not seal the lower end of the interior pipe of describing in this patent document, can not realize the extruding to material like this, just can not drive piles.If conical head is made in interior pipe lower end, between pipe and the outer tube, the formation pipe close increases the pressure between interior pipe and the outer tube in easily material being expressed to again, outer tube might be swarmed in, and therefore interior pipe lower end is made conical head and can not be constructed.3, only in outer tube, insert discrete material such as masonry in the disclosed technology of this patent document, these discrete materials are pressed into the outer tube bottom periphery, form the masonry enlarged footing of a prose style free from parallelism.The enlarged footing of these prose style free from parallelisms is after building forms, and pile body is pressed on these discrete materials, and some pile body pierces through discrete material possibly, causes sedimentation excessive, and building is destroyed because of differential settlement.That 4, mentions in this patent document places in outer tube when promoting outer tube behind the reinforcing cage concrete perfusion, withstand concrete with the interior pipe that is subjected to static pressure oil cylinder downward pressure, the reinforcing cage absolute altitude can be forced down, damages by pressure like this, make its torsional deformation, make the structural damage of pile body, influence bearing capacity.
Summary of the invention:
The technical issues that need to address of the present invention provide the static pressure construction equipment and the job practices of the concrete pile of the big and uniformity of a kind of bearing capacity.
The present invention is achieved in that
The construction equipment of concrete pipe base of the present invention is to adopt top pressing type static pressed pile machinery, top pressing type static pressed pile machinery comprises base, support and is arranged on the manometric hydraulic cylinder that is connected with on the support, also comprise the casing and the interior pipe that are connected with top pressing type static pressed pile machinery, the length of interior pipe is greater than the length of casing, and the external diameter of interior pipe is slightly less than the internal diameter of casing; Interior pipe lower end is provided with the tack shutoff.
Further improvement in the technical proposal is: have charge door on the sidewall of casing; Charge door can have one or more.
The further improvement of the construction equipment of concrete pipe base of the present invention is: casing is provided with the concrete shaking device of vibrations.
The processing step of construction of the present invention comprises:
1,, and arrives projected depth with casing and the interior effective hydraulic cylinder that the places casing soil at place, pressure pile position progressively; This degree of depth is to have higher, the metastable soil layer of bearing capacity;
2, mention interior pipe and from the charge door of casing, insert a certain amount of building waste, as masonry, tile etc.;
3, put down interior pipe and be pressed on the building waste, use the hydraulic cylinder of top pressing type static pressed pile machinery that building waste is extruded outside the casing;
When the reading of hydralic pressure gauge was still greater than design load when 4, repeating step 2.3 was outside interior pipe lower end extrudes casing, stop to push building waste, this design load will guarantee that adjacent studs is not damaged and transfer stake earth stress down to greatest extent; This moment, the building waste in the casing bottom formed stake end prose style free from parallelism force-bearing table.
5, mention the gradation of interior pipe and from the casing charge door, add a certain amount of harsh concrete, gradation extrudes harsh concrete outside the casing by interior pipe with hydraulic cylinder, thereby on casing bottom building waste stake end prose style free from parallelism force-bearing table, form concrete pile end solid force-bearing table, stake end solid force-bearing table is pile body and stake end prose style free from parallelism force-bearing table transition portion, by this transition portion the power of pile body is distributed on the stake end prose style free from parallelism force-bearing table uniformly, do not produce punching failure, it is stressed to give full play to stake end prose style free from parallelism force-bearing table and following soil body fellowship thereof;
6, propose interior pipe, in casing, place reinforcing cage, the perfusion pile concrete, the limit is carried the casing limit and is smash pile with shaking device vibrations casing or after mentioning casing with the shock club shake.
The further improvement of job practices of the present invention is, in order to manufacture the castinplace pile of large bearing capacity, after finishing above-mentioned processing step 1 to 5, proceeds following technological operation:
(1), mention interior pipe, concrete perfusion is to another design height in casing;
(2), in casing, add a certain amount of harsh concrete, interior pipe is put down, be pressed on the above-mentioned harsh concrete, the lifting casing is the same to the lower end of casing lower end and interior pipe to be stopped when high;
(3), in pressing down, manage and casing, drafts is 0.5~1m with hydraulic cylinder;
(4), repeating step 2,3 reaches design load up to the harsh concrete amount, forms boss in the middle of the concrete on the pile body;
(5), repeat above-mentioned steps 1,2,3,4, on the differing heights of stake be form on the different soil layer a plurality of in the middle of boss, give full play to each soil layer and participate in stressed;
(6), mention interior pipe, put into reinforcing cage, concrete perfusion, the limit is carried the casing limit and is smash pile with shaking device vibrations casing or after mentioning casing with the shock club shake.
Because adopt technique scheme, the obtained technological progress of the present invention is:
Because the present invention has adopted the method that is pressed into bulk material and harsh concrete in the gradation of the bottom in stake hole, below pile body, form stake end solid force-bearing table and stake end prose style free from parallelism force-bearing table, the bearing capacity of pile body is strengthened greatly, the load that pile body carried can hold the solid force-bearing table to be distributed on the stake end prose style free from parallelism force-bearing table by stake, be distributed to again in the soil layer below the stake end prose style free from parallelism force-bearing table, make each supporting capacity uniformity, prevented that pile body from piercing through the possibility of discrete material, avoided building settlement excessive or because differential settlement building is destroyed.
In the method for the present invention, manometric reading is to extrude casing just to read when outer in interior pipe lower end, and the frictional force in this moment between pipe and outer tube and the inner filler thereof reduces greatly, and the reading of hydralic pressure gauge reacts at this moment is only real bearing capacity of single pile characteristic value.In practice of construction, from manometric reading, can go out such phenomenon by clear reaction: when interior pipe does not stretch out casing, manometric reading is very big, when interior pipe stretches out casing, pressure can reduce suddenly, therefore have only when interior pipe stretches out outside the casing, the supporting capacity of the force-bearing table that pressure gauge reading just reacts, at this moment just can know the pressure size that force-bearing table can bear from manometric reading, such benefit is that construction parameter is clear and definite, construction quality is controlled easily, rather than calculates bearing capacity by experience again, has reduced human error.
Because the whole construction course of job practices of the present invention is all finished with hydraulic pressure, has avoided the vibration that compaction pile brought, avoided the influence of finishing stake and building site surrounding buildings thing to facing mutually, its pile quality is evenly reliable, and otherness is little.
In the construction equipment of the present invention, change the conehead of interior pipe bottom into tack, easily material advanced downwards, form pipe close between pipe and the outer tube in material being unlikely be expressed to, avoided with outer tube swarm in may.
The length of the interior pipe of construction equipment of the present invention, can be stretched out outside the casing when having guaranteed that interior pipe is depressed greater than the length of casing, guarantees that pressure reading is accurate, and forms the enlarged footing of stake end solid force-bearing table and stake end prose style free from parallelism force-bearing table.
On the sidewall of casing, have one or more charge door, can be when manufacturing stake end solid force-bearing table and stake end prose style free from parallelism force-bearing table, will not propose outside the casing fully by interior pipe, just can be reinforced at the charge door of side, not only rapidly reinforced, and the complex operations that need align again when having avoided interior pipe to propose to enter casing once more behind the casing outside, make easy construction rapid.And in the middle of the concrete on making a plurality of pile bodies during boss, can be reinforced at the charge door place of differing heights easily.After producing the middle boss of concrete on the pile body, can strengthen the bearing capacity of castinplace pile, thereby be used for highrise building.
The concrete shaking device of vibrations is set on casing, behind the perfusion pile concrete, promote in the process of casing, can shake casing while promoting, thereby with the concrete ram-jolt in the casing, the operation of smashing an inner concrete with the shock club shake again behind the casing, accelerating construction progress are mentioned in saving.
Description of drawings:
Fig. 1 is to be the main construction technological process schematic diagram of the present invention to Fig. 4;
Fig. 5 is the structural representation of large bearing capacity pile.
Wherein: 1, hydraulic cylinder, 2, interior pipe, 3, shaking device, 4, charge door, 5, casing, 6, the tack shutoff, 7, stake end prose style free from parallelism force-bearing table, 8, stake end solid force-bearing table, 9, middle boss, 10, reinforcing cage.
The specific embodiment:
Below in conjunction with drawings and Examples the present invention is described in further details:
The construction equipment of concrete pipe base of the present invention is to adopt top pressing type static pressed pile machinery, top pressing type static pressed pile machinery mainly comprises base, support and is arranged on and can move up and down the manometric hydraulic cylinder 1 of being connected with of position on the support, also comprise the casing 5 and the interior pipe 2 that are connected with static pressed pile machinery, casing 5 and in pipe 2 be positioned at hydraulic cylinder 1 below, and be connected on the support with cable wire, pulley; In pipe 2 be engaged in the casing 5, the length of interior pipe 2 is greater than the length of casing 5, can reach when pipe is depressed in making casing below, the external diameter of interior pipe is slightly less than the internal diameter of casing; Interior pipe 2 lower ends are provided with tack shutoff 6.On the sidewall of casing 5, have a plurality of charge doors 4; Also be provided with the concrete shaking device 3 of vibrations on casing 5 tops.
Embodiment 1
Processing step when utilizing above-mentioned construction equipment to make straight castinplace pile is as follows:
1, with casing 5 and the interior pipe 2 usefulness hydraulic cylinders 1 that are placed in one progressively in the soil at place, pressure pile position, and arrives projected depth, as shown in Figure 1;
2, mention interior pipe 2 and from the charge door 4 of casing, insert a certain amount of building waste, as masonry, tile etc.;
3, put down in pipe be pressed on the building waste, with the hydraulic cylinder 1 of top pressing type static pressed pile machinery building waste is extruded outside the casing 5, building waste is diffused in the soil below the casing;
When the reading of hydralic pressure gauge was still greater than design load when 4, repeating step 2.3 was outside interior pipe lower end extrudes casing, stop to push building waste, this moment, the building waste in the casing bottom formed stake end prose style free from parallelism force-bearing table 7, as shown in Figure 2;
5, mention the gradation of interior pipe and from the charge door of casing, add a certain amount of harsh concrete, gradation extrudes harsh concrete outside the casing by interior pipe with hydraulic cylinder, thereby on the stake end prose style free from parallelism force-bearing table that casing bottom building waste forms, form concrete pile end solid force-bearing table 8 again, as shown in Figure 3;
6, propose interior pipe, in casing, place reinforcing cage 10, the perfusion pile concrete, the limit is carried the casing limit and is shaken casings with shaking device 3, treats that casing proposes the back and forms pile body, as shown in Figure 4.
Embodiment 2
Processing step when utilizing construction equipment of the present invention to make the large bearing capacity castinplace pile of being with middle boss is as follows:
After carrying out a stake end prose style free from parallelism force-bearing table and stake end solid force-bearing table by the step 1 to 5 of embodiment 1, proceed following technological operation:
1, mention interior pipe, concrete perfusion is to another design height in casing;
2, in casing, add a certain amount of harsh concrete by charge door, interior pipe is put down, be pressed on the above-mentioned harsh concrete, promote that casing is the same to the lower end of casing lower end and interior pipe to be stopped when high;
3, manage and casing in pressing down with hydraulic cylinder, drafts is 0.5~1m;
4, repeating step 2,3 reaches design load up to the harsh concrete amount, forms boss 9 in the middle of the concrete on the pile body;
5, repeat above-mentioned steps 1,2,3,4, on the differing heights of stake be form on the different soil layer a plurality of in the middle of boss 9;
6, mention interior pipe, put into reinforcing cage, concrete perfusion is mentioned casing then, smashes pile with the shock club shake again, as shown in Figure 5.

Claims (4)

1. the construction equipment of a concrete pipe base, comprise top pressing type static pressed pile machinery and be connected with manometric hydraulic cylinder, it is characterized in that: also comprise the casing and the interior pipe that are connected with top pressing type static pressed pile machinery, the length of interior pipe is greater than the length of casing, and the external diameter of interior pipe cooperates with the internal diameter of casing; Interior pipe lower end is provided with the tack shutoff.
2. the construction equipment of a kind of concrete pipe base according to claim 1 is characterized in that having charge door on the sidewall of described casing; On casing, also be provided with the concrete shaking device of vibrations.
3. the construction technology of a kind of concrete pipe base according to claim 1 is characterized in that the processing step of constructing comprises:
A, with casing and the interior effective hydraulic cylinder that is placed in one progressively in the soil at place, pressure pile position, and arrive and have bearing capacity projected depth higher, metastable soil layer;
B, insert a certain amount of building waste in the charge door of Guan Bingcong casing in mentioning;
C, put down in pipe to building waste, with hydraulic cylinder building waste is extruded along casing;
D, repeating step B.C extrude the hydralic pressure gauge that casing is connected with hydraulic cylinder when outer up to interior pipe lower end reading stops to push building waste when formation is held prose style free from parallelism force-bearing table greater than design load, below casing;
E, mention interior pipe, gradation adds a certain amount of harsh concrete from the casing charge door, gradation extrudes harsh concrete outside the casing by interior pipe with hydraulic cylinder, thereby forms concrete pile end solid force-bearing table below casing on the surrounding buildings rubbish stake end prose style free from parallelism force-bearing table;
F, propose in pipe, in casing, place reinforcing cage, the perfusion pile concrete, the limit is carried the casing limit and is smash pile with shaking device vibrations casing or after mentioning casing with the shock club shake.
4. the construction technology of a kind of concrete pipe base according to claim 3 is characterized in that:
Finishing the described processing step A of claim 3 behind E, also proceed following technological operation,
G, mention interior pipe, concrete perfusion is to another design height in casing;
H, add a certain amount of harsh concrete again in casing, interior pipe is put down, be pressed on the above-mentioned harsh concrete, the lifting casing is the same to the lower end of casing lower end and interior pipe to be stopped when high;
I, manage and casing in pressing down with hydraulic cylinder, drafts is 0.5~1m;
J, repeating step H, I reach design load, form in the middle of the concrete on the pile body till the boss up to the harsh concrete amount;
K, repeat above-mentioned steps G, H, I, J, on the differing heights of stake be form on the different soil layer a plurality of in the middle of boss;
L, mention interior pipe, put into reinforcing cage, concrete perfusion, the limit is carried the casing limit and is smash pile with shaking device vibrations casing or after mentioning casing with the shock club shake.
CN2007101394231A 2007-09-14 2007-09-14 Construction device and construction technique for concrete pipe base Expired - Fee Related CN101126239B (en)

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101761072B (en) * 2008-12-24 2011-11-09 上海市基础工程有限公司 Construction process for bored pile close to flood wall through riprap layer
CN102409667A (en) * 2011-07-29 2012-04-11 张立军 Construction device and construction process of extruded and expanded cast-in-place pile
CN102080374B (en) * 2009-12-01 2012-05-02 中冶交通工程技术有限公司 Construction method of concrete filling piles
CN103541352A (en) * 2013-08-02 2014-01-29 中冶集团武汉勘察研究院有限公司 Underground and overground continuous construction method for major-diameter high flat bed pile in sandy soil stratum
CN104294817A (en) * 2014-08-06 2015-01-21 王继忠 Construction method for concrete pile
CN104294818A (en) * 2014-08-07 2015-01-21 王继忠 Construction method for concrete pile
CN105649074A (en) * 2016-03-22 2016-06-08 沙焕焕 Tubular pile expansion concrete stiffened composite pile and construction method thereof
CN106638564A (en) * 2016-12-31 2017-05-10 上海远方基础工程有限公司 Construction method of underground diaphragm wall
CN110820734A (en) * 2019-11-26 2020-02-21 江西博慧工程技术服务有限公司 High-performance combined friction pile structure and construction method

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Publication number Priority date Publication date Assignee Title
JPH04150767A (en) * 1990-10-08 1992-05-25 Fuji Electric Co Ltd Switching power supply circuit
CN1214158C (en) * 1998-11-23 2005-08-10 王继忠 Method for construction of cast-in-place concrete anchor pile
CN100420798C (en) * 2006-04-03 2008-09-24 梁毅 Construction method for concrete pile by static extrusion

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101761072B (en) * 2008-12-24 2011-11-09 上海市基础工程有限公司 Construction process for bored pile close to flood wall through riprap layer
CN102080374B (en) * 2009-12-01 2012-05-02 中冶交通工程技术有限公司 Construction method of concrete filling piles
CN102409667A (en) * 2011-07-29 2012-04-11 张立军 Construction device and construction process of extruded and expanded cast-in-place pile
CN102409667B (en) * 2011-07-29 2014-06-18 张立军 Construction device and construction process of extruded and expanded cast-in-place pile
CN103541352A (en) * 2013-08-02 2014-01-29 中冶集团武汉勘察研究院有限公司 Underground and overground continuous construction method for major-diameter high flat bed pile in sandy soil stratum
CN103541352B (en) * 2013-08-02 2015-08-26 中冶集团武汉勘察研究院有限公司 A kind of at ground, sandy soil stratum major diameter Vertical spots underground continuous construction method
CN104294817A (en) * 2014-08-06 2015-01-21 王继忠 Construction method for concrete pile
CN104294817B (en) * 2014-08-06 2016-06-29 王继忠 The construction method of concrete-pile
CN104294818A (en) * 2014-08-07 2015-01-21 王继忠 Construction method for concrete pile
CN104294818B (en) * 2014-08-07 2016-06-29 王继忠 The construction method of concrete-pile
CN105649074A (en) * 2016-03-22 2016-06-08 沙焕焕 Tubular pile expansion concrete stiffened composite pile and construction method thereof
CN105649074B (en) * 2016-03-22 2019-09-03 沙焕焕 The squeezed concrete stiff composite pile of tubular pole and its construction method
CN106638564A (en) * 2016-12-31 2017-05-10 上海远方基础工程有限公司 Construction method of underground diaphragm wall
CN110820734A (en) * 2019-11-26 2020-02-21 江西博慧工程技术服务有限公司 High-performance combined friction pile structure and construction method
CN110820734B (en) * 2019-11-26 2021-05-07 江西博慧工程技术服务有限公司 High-performance combined friction pile structure and construction method

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