CN106284317A - A kind of building pile foundation construction method - Google Patents
A kind of building pile foundation construction method Download PDFInfo
- Publication number
- CN106284317A CN106284317A CN201610796630.3A CN201610796630A CN106284317A CN 106284317 A CN106284317 A CN 106284317A CN 201610796630 A CN201610796630 A CN 201610796630A CN 106284317 A CN106284317 A CN 106284317A
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- China
- Prior art keywords
- hole
- pile foundation
- construction method
- foundation construction
- building pile
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Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
- E02D5/34—Concrete or concrete-like piles cast in position ; Apparatus for making same
- E02D5/38—Concrete or concrete-like piles cast in position ; Apparatus for making same making by use of mould-pipes or other moulds
- E02D5/44—Concrete or concrete-like piles cast in position ; Apparatus for making same making by use of mould-pipes or other moulds with enlarged footing or enlargements at the bottom of the pile
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/10—Deep foundations
- E02D27/12—Pile foundations
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2250/00—Production methods
- E02D2250/0007—Production methods using a mold
Abstract
The invention discloses a kind of building pile foundation construction method, its drip irrigation device is, comprise the following steps: smooth location, measuring stake holes position, mud pit, mud circulation groove are set, according to building shape base plane position and the drilling sequences upper bore operation stand laid for supporting rig on construction ground；Use percussive drill and Spiral digging machine to combine boring, according to position, hole geological condition, select percussive drill, the drilling sequences of rotary drilling rig；Wait digging to the required degree of depth, overturn by the convertible drill bit being arranged on rig, carry out reaming;Boring is upwards regained, and then carries out a reaming at interval of one section；Bar connecting is passed through in place corresponding with ground datum hole and supported hole on the barrel of casing, is then imbedded in hole by casing；Take percussive drill or crane lifting to transfer installation steel reinforcement cage, use catheterized reperfusion underwater concrete.The piling strtucture intensity that the building pile foundation construction method of the present invention prepares is high, bearing capacity is big.
Description
Technical field
The present invention relates to a kind of construction techniques, more specifically, it relates to a kind of building pile foundation construction method.
Background technology
Pile foundation is collectively constituted with the cushion cap on stake top by foundation pile and connecting, if pile body is all embedded in soil, cushion cap bottom surface and
The soil body contacts, and the most referred to as embedded footing on piles, low capped pile foundation if basseting and be positioned at more than ground at the bottom of cushion cap in pile body top, then becomes high cushion cap
Pile foundation, building pile foundation is usually embedded footing on piles, low capped pile foundation plinth, and in skyscraper, pile foundation is widely used.
Installation mode can be divided into prefabricated pile and bored concrete pile at present, and prefabricated pile passes through piling machine by prefabricated reinforced concrete
Address is squeezed in soil stake, so can save material and intensity is high, it is adaptable to requiring higher building, shortcoming is then difficulty of construction
Height, is limited the engineering time by machinery quantity long；And bored concrete pile is to hole the most on construction ground, by steel after reaching desired depth
Muscle is put in placing concrete fixed-type, and such advantage is that difficulty of construction is low, especially artificial digging pile, can not be by machinery
Count quantitative limitation, and all piles can be constructed, and is greatly saved the time, but a disadvantage is that low bearing capacity simultaneously.
Form of construction work for bored concrete pile, it is necessary to improve its bearing capacity.
Summary of the invention
The deficiency existed for prior art, it is an object of the invention to provide a kind of building pile foundation construction method, passes through
The pile foundation with relatively large bearing capacity is set bottom pile foundation, is irrigated a technique the most again, thus is greatly improved filling
The bearing capacity of note stake.
For achieving the above object, the technical scheme is that a kind of building pile foundation construction method, its feature exists
In, comprise the following steps: prepare before P1, boring: smooth location, measuring stake holes position, mud pit, mud circulation groove be set,
According to building shape base plane position and the drilling sequences upper bore operation stand laid for supporting rig on construction ground；
P2, boring: use percussive drill and Spiral digging machine to combine boring, according to position, hole geological condition, select percussive drill, churning driven
The drilling sequences of machine；
P3, expansion ground datum hole: wait digging to the required degree of depth, overturn by the convertible drill bit being arranged on rig, expand
Hole, reaming aperture now is D1;
P4, expansion supported hole: boring is upwards regained, and then carries out a reaming at interval of one section, and aperture is followed successively by D2, D3, D4...Dn
(n >=2)；
P5, bury casing underground: bar connecting is passed through in place corresponding with ground datum hole and supported hole on the barrel of casing, then will
In casing embedment hole；
P6, pile: take percussive drill or crane lifting to transfer installation steel reinforcement cage, use catheterized reperfusion underwater concrete.
By using technique scheme, because in prior art when being irrigated technique, because of not foot bottom it
Enough supports thus cause bearing capacity to be told somebody what one's real intentions are, existing employing drills through ground datum hole and supported hole in advance, is then carrying out concrete filling
Note, so that building pile foundation can have enough supports in the part of below ground, thus improves its bearing capacity, also simultaneously
Strengthen the structural strength of building pile foundation, thus from performance, the most preferably improve its bearing capacity.
Further, wherein D1, D2, D3...Dn are equal in magnitude.
By using technique scheme, the aperture of ground datum hole and supported hole is set to unanimously, so when molding
Ensure whole building pile foundation entirety uniformity.
Further, wherein D1, D2, D3...Dn taper into.
By using technique scheme, the aperture of ground datum hole and supported hole is tapered into from lower to upper, so that
It is more firm to obtain bottom building pile foundation, and foundation consolidates, and saves material simultaneously.
Further, wherein D1, D2, D3...Dn become larger.
By using technique scheme, the aperture of ground datum hole and supported hole is become larger from lower to upper, so may be used
To ensure the forming stability of building pile foundation, the part near ground is not easy to be inclined by deformation, and perpendicularity is high, can reach simultaneously
To facilitating the purpose of molding, the time period of curing molding, the duration shortens.
Further, the spacing in adjacent supports hole about 2 ~ 3m.
By using technique scheme, the distance between adjacent supports hole is set to 2 and is to ensure that building to 3m
Pile foundation reaches to save material, the purpose of reduction of erection time on the basis of having enough bearing capacities simultaneously, and long too short meeting causes building
Build the cost performance step-down of construction.
Further, in P6 pile-formation process, during pouring underwater concrete, first pour molding ground datum hole, treat that ground datum hole coagulates
Gu carry out overall perfusion concrete formation after Gu Hua again.
By using technique scheme, when molding pile foundation, first molding ground datum hole, make the concrete in ground datum hole first solid
Determine molding, pour building pile foundation the most again, be so to ensure that and make building pile foundation conflict in the portion of the ground datum hole having cured
Point, thus realize the raising of the bearing capacity of building pile foundation.
Further, described ground datum hole is reserved with the preformed hole of circular platform type when pouring molding.
By using technique scheme, the hole reserving truncated cone-shaped when ground datum hole pours molding is in order at building pile foundation
Can be combined with ground bore portion more firm during molding, be further ensured that the bearing capacity of building pile foundation.
Further, described supported hole and Water table stagger setting.
By using technique scheme, supported hole and Water table are staggered and is to ensure that building pile foundation is when molding
Will not be affected by subsoil water.
Further, at the bottom of the hole of described ground datum hole with the hole base thickness degree of preformed hole more than 10cm.
By using technique scheme, the spacing at the bottom of the hole of ground datum hole and at the bottom of the hole of preformed hole is arranged more than 10cm
It is to ensure that apparatus for building has enough supports when conflicting in ground datum hole, if less than 10cm, then easily by ground datum hole
The concrete extrusion of part produces slight crack and affects its bearing capacity.
Further, described casing thickness >=5mm.
By using technique scheme, the thickness of casing is set greater than being to ensure that concrete is becoming equal to 5mm
Will not deform because casing arm is relatively thin during type, certainly can not arrange blocked up, should be less than equal to 10mm, therefore protect under this technique
Cylinder non-dismountable, arrange blocked up, cause cost to increase.
Compared with prior art the present invention has an advantage that by just getting out ground datum hole when boring, then at ground
Concrete perfusion molding in hole, so that make rocks system under the effect not having rock support by oneself, pours and builds
Build pile foundation, so that building pile foundation is conflicted in the ground datum hole of well in advance, thus improve the bearing capacity of building pile foundation, with
Time when building pile foundation molding also can contoured support hole is suitable on its sidewall concrete, thus improve the knot with ground
Close intensity and the structural strength of self, this makes it possible to be greatly improved the bearing capacity of building pile foundation.
Accompanying drawing explanation
Fig. 1 is the planar structure schematic diagram of embodiment one；
Fig. 2 is the planar structure schematic diagram of embodiment two；
Fig. 3 is the planar structure schematic diagram of embodiment three.
In figure: 1, building pile foundation；2, supported hole；3, datum hole.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is described in further detail.
This specific embodiment is only explanation of the invention, and it is not limitation of the present invention, people in the art
The present embodiment can be made after reading this specification by member as required does not has the amendment of creative contribution, but as long as at this
All protected by Patent Law in the right of invention.
Embodiment one: a kind of building pile foundation construction method, as it is shown in figure 1, comprise the steps:
P1: prepare before boring: first place is carried out before construction smooth, compacting, meets and lay rig place requirement for bearing capacity；Survey
Put stake holes position, mud pit, mud circulation groove are set；Go up on construction ground according to building pile foundation plan-position and drilling sequences
Lay the bore operation stand for supporting rig；Using operation platform to provide stable support for rig, pile foundation construction can not
By soil property place mud, solidifying, the rainy day etc. affect, it is ensured that pile foundation is constructed continuously, reduce construction cost, improve efficiency of construction.
P2: boring: use percussive drill and rotary drilling rig to combine boring；According to position, hole geological condition, impact is selected to bore
Machine, the drilling sequences of rotary drilling rig；5-8 platform percussive drill is typically taked to coordinate 1 rotary drilling rig operation；Dig initially with rotation
Drill hole of drilling machine, drills through artificial miscellaneous fill layer and argillic horizon, and the degree of depth, to underground 10m, supplements mud in boring in boring procedure
Starch with keep creeping into and carry in brill metapore mud liquid level higher than mud liquid level in more than 2.0m, and hole bottom casing above Ground under
More than water level elevation 1.0m, it is to avoid carry mud during brill and wash away and form negative pressure in level of ground water at the bottom of soil layer or mud face and cause
Boring collapse hole；After being drilled into pebble layer, mobile rotary drilling rig, to next position, hole, is laid percussive drill and is continued boring, percussive drilling
Begin to take on low stroke, stable after normally creep into, boring procedure throws in stake holes clay pulping, the most compacted hole wall, really
Protect pebble layer hole wall safety；Percussive drilling muck removal take circulating mud and draw quarrel cylinder draw quarrel associated form；Percussive drilling passes
After boulder bed, enter mud, continue to take percussive drilling, according to geological condition during boring, part stone can be put into, stable silt
Mud ground layer hole wall, drills through mud, enters horizon d, whole hole after reaching projected depth；
P3, expansion ground datum hole: wait digging to the required degree of depth, start the hydraulic jack being arranged on unit head top, pass through hydraulic pressure
Cylinder piston rod lower end anti-screws back rotary head and pulls steel wire rope, drives convertible drill bit to overturn, and the diameter of upset is straight beyond drilling rod
Footpath reaches after design requires height, and hydraulic jack is regained upset drill bit and stopped stirring reaming.
P4, expansion supported hole: now drill bit is upwards regained, rising 2-3m then repeats the technique of P3 and carries out expanding supported hole, and
The length of supported hole keeps consistent with the length of ground datum hole, i.e. state in Fig. 1 is looped around the support on the sidewall of building pile foundation 1
Hole 2 is identical with the aperture of the ground datum hole being positioned at bottom building pile foundation 1, and then need not carry out reaming when running into Water table,
Stagger.
P5: bury casing underground: take to change the clear quarrel of slurry and rotary drilling rig double door drill bit or percussive drill is drawn quarrel cylinder and drawn the clear hole of quarrel
Combining clear hole technique by the disintegrating slag Impurity removal in hole, then use rotary drilling rig boring to after the depth of burying, rotary drilling rig is pacified
Dress casing driver, promotes casing, is directed at position, hole, rotates armed lever and transfers installation casing；Bury rear casing end face underground to exceed than ground
300mm, periphery uses clay backfilling compacting；Described casing uses the steel plate making being less than or equal to 10mm more than or equal to 5mm, simultaneously
Casing being, the part of ground datum hole and supported hole, by default bar connecting, is used for forming cavity and arrives for Concrete Filled
In ground datum hole and supported hole.
P6: pile: after casing buries, first imports to part concrete in ground datum hole, and presets mould in ground datum hole
Tool is used for being formed cavity, at the bottom of the hole of the end of mould and ground datum hole between distance more than 10cm, simultaneously cavity be shaped as circle
Platform shape, after being positioned at the concrete formation of ground datum hole, takes out mould, then takes percussive drill or crane lifting to transfer
Installing steel reinforcement cage, after using catheterized reperfusion underwater concrete, coagulation forming gets final product pile.
Embodiment two: a kind of building pile foundation construction method, is as in figure 2 it is shown, in reaming with embodiment one difference
Time, the length of ground datum hole 3 is the longest, is gradually contracted to ground by the bottom of ground in the space of the supported hole 2 being then centered around building pile foundation 1 perisporium
Short.
Embodiment three: a kind of building pile foundation construction method, is as it is shown on figure 3, in reaming with embodiment one difference
Time, the length of ground datum hole 3 is the shortest, and the space of the supported hole 2 being then centered around building pile foundation 1 perisporium is gradually increased to ground by the bottom of ground
Long.
Claims (10)
1. prepare before a building pile foundation construction method, it is characterised in that comprise the following steps: P1, boring: smooth location, survey
Put stake holes position, mud pit, mud circulation groove are set, go up on construction ground according to building shape base plane position and drilling sequences
Lay the bore operation stand for supporting rig；
P2, boring: use percussive drill and Spiral digging machine to combine boring, according to position, hole geological condition, select percussive drill, churning driven
The drilling sequences of machine；
P3, expansion ground datum hole: wait digging to the required degree of depth, overturn by the convertible drill bit being arranged on rig, expand
Hole, reaming aperture now is D1;
P4, expansion supported hole: boring is upwards regained, and then carries out a reaming at interval of one section, and aperture is followed successively by D2, D3, D4...Dn
(n >=2)；
P5, bury casing underground: bar connecting is passed through in place corresponding with ground datum hole and supported hole on the barrel of casing, then will
In casing embedment hole；
P6, pile: take percussive drill or crane lifting to transfer installation steel reinforcement cage, use catheterized reperfusion underwater concrete.
A kind of building pile foundation construction method the most according to claim 1, it is characterised in that: wherein D1, D2, D3...Dn are big
Little equal.
A kind of building pile foundation construction method the most according to claim 1, it is characterised in that: wherein D1, D2, D3...Dn by
Gradual change is little.
A kind of building shape base construction method the most according to claim 1, it is characterised in that: wherein D1, D2, D3...Dn by
Gradual change is big.
5. according to a kind of building pile foundation construction method described in Claims 2 or 3 or 4, it is characterised in that: between adjacent supports hole
Away from about 2 ~ 3m.
A kind of building pile foundation construction method the most according to claim 1, it is characterised in that: in P6 pile-formation process, perfusion
During underwater concrete, first pour molding ground datum hole, after ground datum hole solidification solidification, carry out overall perfusion concrete formation again.
A kind of building pile foundation construction method the most according to claim 6, it is characterised in that: described ground datum hole is pouring molding
Time be reserved with the preformed hole of circular platform type.
A kind of building pile foundation construction method the most according to claim 1, it is characterised in that: described supported hole and Water table
Stagger setting.
A kind of building pile foundation construction method the most according to claim 7, it is characterised in that: with pre-at the bottom of the hole of described ground datum hole
The hole base thickness degree boxed out is more than 10cm.
A kind of building pile foundation construction method the most according to claim 1, it is characterised in that: described casing thickness >=5mm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610796630.3A CN106284317B (en) | 2016-08-31 | 2016-08-31 | A kind of building pile foundation construction method |
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| CN201610796630.3A CN106284317B (en) | 2016-08-31 | 2016-08-31 | A kind of building pile foundation construction method |
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| CN106284317B CN106284317B (en) | 2018-07-03 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108360972A (en) * | 2018-01-23 | 2018-08-03 | 四川公路桥梁建设集团有限公司 | A kind of rotary drilling rig is combined with percussive drill carries out bored pile construction method |
| CN108978698A (en) * | 2018-07-18 | 2018-12-11 | 中建七局第建筑有限公司 | A kind of building pile foundation construction method |
| CN110206053A (en) * | 2019-05-21 | 2019-09-06 | 筑邦建设集团股份有限公司 | The construction method of building pile foundation |
| CN113006706A (en) * | 2020-12-16 | 2021-06-22 | 宁波市政工程建设集团股份有限公司 | Steel-mixed rotary drilling rig operation platform and construction method thereof |
| CN114045854A (en) * | 2021-08-03 | 2022-02-15 | 中建三局集团华南有限公司 | Bridge pile foundation composite construction method under complex geological condition |
| CN114197455A (en) * | 2021-12-29 | 2022-03-18 | 山西四建集团有限公司 | Construction method of building pile foundation |
| CN114875899A (en) * | 2022-06-11 | 2022-08-09 | 一山(北京)岩土工程有限公司 | Hard stratum pore-forming pile-forming construction process |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108360972A (en) * | 2018-01-23 | 2018-08-03 | 四川公路桥梁建设集团有限公司 | A kind of rotary drilling rig is combined with percussive drill carries out bored pile construction method |
| CN108978698A (en) * | 2018-07-18 | 2018-12-11 | 中建七局第建筑有限公司 | A kind of building pile foundation construction method |
| CN110206053A (en) * | 2019-05-21 | 2019-09-06 | 筑邦建设集团股份有限公司 | The construction method of building pile foundation |
| CN113006706A (en) * | 2020-12-16 | 2021-06-22 | 宁波市政工程建设集团股份有限公司 | Steel-mixed rotary drilling rig operation platform and construction method thereof |
| CN114045854A (en) * | 2021-08-03 | 2022-02-15 | 中建三局集团华南有限公司 | Bridge pile foundation composite construction method under complex geological condition |
| CN114197455A (en) * | 2021-12-29 | 2022-03-18 | 山西四建集团有限公司 | Construction method of building pile foundation |
| CN114875899A (en) * | 2022-06-11 | 2022-08-09 | 一山(北京)岩土工程有限公司 | Hard stratum pore-forming pile-forming construction process |
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| Publication number | Publication date |
|---|---|
| CN106284317B (en) | 2018-07-03 |
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