CN109162282A - A kind of deep basal pit maintenance construction - Google Patents
A kind of deep basal pit maintenance construction Download PDFInfo
- Publication number
- CN109162282A CN109162282A CN201811032717.9A CN201811032717A CN109162282A CN 109162282 A CN109162282 A CN 109162282A CN 201811032717 A CN201811032717 A CN 201811032717A CN 109162282 A CN109162282 A CN 109162282A
- Authority
- CN
- China
- Prior art keywords
- pile
- bored concrete
- stiffening
- deep basal
- basal pit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/02—Foundation pits
- E02D17/04—Bordering surfacing or stiffening the sides of foundation pits
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D19/00—Keeping dry foundation sites or other areas in the ground
- E02D19/06—Restraining of underground water
- E02D19/12—Restraining of underground water by damming or interrupting the passage of underground water
- E02D19/16—Restraining of underground water by damming or interrupting the passage of underground water by placing or applying sealing substances
-
- 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
- E02D5/74—Means for anchoring structural elements or bulkheads
- E02D5/76—Anchorings for bulkheads or sections thereof in as much as specially adapted therefor
Abstract
The present invention relates to Architectural Equipment technical fields, in particular a kind of deep basal pit maintenance construction, single cylindrical body peripheral pile including multiple lap connections, the inside of peripheral pile is equipped with several continuously arranged bored concrete piles, it is equipped with bored concrete pile collar tie beam and waist rail on each bored concrete pile, is mounted on stiffening pile at bored concrete pile collar tie beam and waist rail.Retaining design of the present invention includes the cylindric peripheral pile of multiple lap connections, and the cylindric peripheral pile of multiple lap connections can form closed water-stop curtain in underground, so that retaining design of the present invention be made to have good water-stagnating effect；In addition setting deposited reinforced concrete pile is used as material of putting more energy on the inside of single cylindric peripheral pile, and more anchor disk jet mixing stiffening piles together are respectively set at bored concrete pile collar tie beam and waist rail, to substantially increase the stiffness and strength of retaining design, therefore retaining design of the invention can reach the double effects of sealing and earth-retaining simultaneously；Retaining design of the present invention is structurally reasonable, reinforcement performance is good.
Description
Technical field
The present invention relates to Architectural Equipment technical field, specially a kind of deep basal pit maintenance construction.
Background technique
In traditional Extra-Deep Foundation Pit system, it is bad or can not be same to there is unreasonable structure, reinforcement performance more in retaining design
The preferable sealing of Shi Shixian and earth-retaining double effects, therefore one kind is structurally reasonable, reinforcement performance is good and it is preferable to realize simultaneously
The exploitation of the Extra-Deep Foundation Pit system of sealing and earth-retaining double effects is necessary.In consideration of it, it is proposed that a kind of deep basal pit is tieed up
Shield construction.
Summary of the invention
The purpose of the present invention is to provide a kind of maintenances of deep basal pit to construct, to solve mentioned above in the background art ask
Topic.
To achieve the above object, the invention provides the following technical scheme:
A kind of deep basal pit maintenance construction, the single cylindrical body peripheral pile including multiple lap connections, the peripheral pile it is interior
Side is equipped with several continuously arranged bored concrete piles, is equipped with bored concrete pile collar tie beam and waist rail, the bored concrete pile on each bored concrete pile
It is mounted on stiffening pile at collar tie beam and waist rail, is equipped with dowel inside each stiffening pile, the bored concrete pile collar tie beam and puts more energy into
The junction of stake and the junction of waist rail and stiffening pile are mounted on Two bors d's oeuveres channel steel purlin, each Two bors d's oeuveres channel steel purlin
Both ends are equipped with anchor plate, and several ribbing reinforcing bars are connected between two anchor plates, are also set in the Two bors d's oeuveres channel steel purlin
There is wedge, Two bors d's oeuveres channel steel purlin and wedge are run through simultaneously in the end of the stiffening pile, and extend out to outside.
Preferably, the peripheral pile is three axes agitating pile.
Preferably, the bored concrete pile is deposited reinforced concrete pile.
Preferably, the tilt angle of the stiffening pile is 45 degree, and the spacing of two neighboring stiffening pile is 1.8m.
Preferably, the dowel is made of multi beam steel strand wires, and every beam steel strand wires are twisted by seven steel wires.
Preferably, it is closely welded and fixed between the Two bors d's oeuveres channel steel purlin and anchor plate, between the anchor plate and wedge
Closely it is welded and fixed.
Compared with prior art, the beneficial effects of the present invention are:
Retaining design of the present invention includes the cylindric peripheral pile of multiple lap connections, the cylindric periphery of multiple lap connections
Stake can form closed water-stop curtain in underground, so that retaining design of the present invention be made to have good water-stagnating effect；In addition single
Setting deposited reinforced concrete pile is as material of putting more energy on the inside of cylindric peripheral pile, and is respectively arranged at bored concrete pile collar tie beam and waist rail
More anchor disk jet mixing stiffening piles together to substantially increase the stiffness and strength of retaining design, therefore of the invention are gone along with sb. to guard him
System can reach the double effects of sealing and earth-retaining simultaneously；Retaining design of the present invention is structurally reasonable, reinforcement performance is good.
Detailed description of the invention
Fig. 1 is retaining design structure drawing of the present invention；
Fig. 2 is retaining design sectional view of the present invention；
Fig. 3 is Two bors d's oeuveres channel steel purlin cross-section diagram of the present invention；
Fig. 4 is the A-A sectional view of Two bors d's oeuveres channel steel purlin cross-section diagram of the present invention；
Fig. 5 is the B-B sectional view of Two bors d's oeuveres channel steel purlin cross-section diagram of the present invention.
In figure: peripheral pile 1, bored concrete pile 2, stiffening pile 3, dowel 4, bored concrete pile collar tie beam 5, waist rail 6, Two bors d's oeuveres channel steel purlin 7, anchor
Backing plate 8, ribbing reinforcing bar 9, wedge 10.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that, term " center ", " longitudinal direction ", " transverse direction ", " length ", " width ",
" thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside", " up time
The orientation or positional relationship of the instructions such as needle ", " counterclockwise " is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of
The description present invention and simplified description, rather than the equipment of indication or suggestion meaning or element must have a particular orientation, with spy
Fixed orientation construction and operation, therefore be not considered as limiting the invention.
Fig. 1-5 is please referred to, the present invention provides a kind of technical solution:
A kind of deep basal pit maintenance construction, the single cylindrical body peripheral pile 1 including multiple lap connections, the inside of peripheral pile 1
Equipped with several continuously arranged bored concrete piles 2, bored concrete pile collar tie beam 5 and waist rail 6,5 He of bored concrete pile collar tie beam are equipped on each bored concrete pile 2
It is mounted on stiffening pile 3 at waist rail 6, dowel 4, the connection of bored concrete pile collar tie beam 5 and stiffening pile 3 are equipped with inside each stiffening pile 3
Place and the junction of waist rail 6 and stiffening pile 3 are mounted on Two bors d's oeuveres channel steel purlin 7, and the both ends of each Two bors d's oeuveres channel steel purlin 7 are all provided with
There is anchor plate 8, several ribbing reinforcing bars 9 are connected between two anchor plates 8, wedge 10 is additionally provided in Two bors d's oeuveres channel steel purlin 7, puts more energy into
Two bors d's oeuveres channel steel purlin 7 and wedge 10 are run through simultaneously in the end of stake 3, and extend out to outside.
In the present embodiment, peripheral pile 1 is three axes agitating pile.
Further, peripheral pile 1 is cylindric.
It is worth noting that peripheral pile 1 is using cement as curing agent, by three axis Mixing Machines in ground by weak soil
Or the pressure of husky equal and curing agent is mixed and stirred, and is made soft base scleroma and is improved foundation strength, formed in construction multiple lap connections by justifying
The cylindric condensation pile body that plate-like mixture is piled into.
In the present embodiment, bored concrete pile 2 is deposited reinforced concrete pile.
In the present embodiment, the tilt angle of stiffening pile 3 is 45 degree.
It is worth noting that the diameter of stiffening pile 3 is not less than Φ 400, stiffening pile 3 uses 52.5 grades of ordinary portland cements
P.O52.5 is made, cement mixed weight 25%, the visual live soil layer situation appropriate adjustment of the ratio of mud 0.7；The pressure of jet mixing is answered
For 15-25MPa.The advance and retreat number of the jet mixing of enlarged footing is more secondary than pile body increase, guarantees the straight of enlarged footing end 2m range
Diameter reaches 700mm；Cement slurry answers uniform mixing, with mixing with the cement slurry once mixed and stirred should be finished before initial set.
Further, the spacing of two neighboring stiffening pile 3 is 1.8m, and is upper and lower twice fissure of displacement quincuncial arrangement.
In the present embodiment, dowel 4 is made of multi beam steel strand wires, and every beam steel strand wires are twisted by seven steel wires.
It is worth noting that steel strand manufacturing of the dowel 4 using multi beam Φ 15.2, intensity is 1860 grades；Every beam steel twists
Line is twisted by 7 steel wires, stays 0.8m so as to tensioning outside stake, and dowel 4 uses QVM series anchorage.
Further, the position error that dowel 4 is inserted into stiffening pile 3 is no more than 30mm, and elevation of bottom error is not more than
20cm.Dowel 4 should be placed on the center of stiffening pile 3.
In the present embodiment, closely it is welded and fixed between Two bors d's oeuveres channel steel purlin 7 and anchor plate 8, between anchor plate 8 and wedge 10
Closely it is welded and fixed.
The working principle of the invention: when construction, peripheral pile 1 of first constructing, then the armored concrete for 1 inside of peripheral pile of constructing are filled
Infuse stake 2, peripheral pile 1 is using cement as curing agent, by three axis Mixing Machines in ground by weak soil or sand etc. and curing agent
Pressure is mixed and stirred, and so that soft base is hardened and is improved foundation strength, is formed being accumulated by discoid mixture for multiple lap connections in construction
At cylindric condensation pile body, the cylindric condensation pile body of multiple lap connections can form closed water-stop curtain in underground, from
And make retaining design of the present invention that there is good water-stagnating effect；In addition armored concrete is set on the inside of single cylindric peripheral pile 1
Bored concrete pile 2 is as material of putting more energy into, and respectively one of more anchor disk jet mixing of setting at the bored concrete pile collar tie beam 5 and waist rail 6 of bored concrete pile 2
Stiffening pile 3, to substantially increase the stiffness and strength of retaining design, therefore retaining design of the invention can reach sealing simultaneously
With the double effects of earth-retaining；
3 interpolation dowel 4 of stiffening pile should enter rotary churning pile bottom.Dowel 4 is inserted into position error and is no more than 30mm, elevation of bottom
Error is not more than 20cm.Dowel 4 should be placed on the center of stiffening pile 3, beam strength of bearing down on one after jet mixing pile body conserves 7 days
It after reaching 70%, is locked after applying pretension on dowel 4, connects dowel 4 and bored concrete pile collar tie beam 5, waist rail 6 and stiffening pile 3
It connects securely；
Tensioning fixation is carried out using high-pressure oil pump and 1000KN punching jack.First with 20% tensile load before formal tensioning
Pre- tensioning is primary, then with 50%, 100% tensile load grading tension, is kept for 5 minutes under tensile load, observation anchor head without
Again by locking load locking after offset phenomena.
The basic principles, main features and advantages of the present invention have been shown and described above.The technology of the industry
For personnel it should be appreciated that the present invention is not limited to the above embodiments, described in the above embodiment and specification is only the present invention
Preference, be not intended to limit the invention, without departing from the spirit and scope of the present invention, the present invention also has various
Changes and improvements, these changes and improvements all fall within the protetion scope of the claimed invention.The claimed scope of the invention is by institute
Attached claims and its equivalent thereof.
Claims (6)
1. a kind of deep basal pit maintenance construction, the single cylindrical body peripheral pile (1) including multiple lap connections, it is characterised in that: institute
The inside for stating peripheral pile (1) is equipped with several continuously arranged bored concrete piles (2), is equipped with bored concrete pile on each bored concrete pile (2)
Collar tie beam (5) and waist rail (6) are mounted on stiffening pile (3) at the bored concrete pile collar tie beam (5) and waist rail (6), each stiffening pile
(3) internal to be equipped with dowel (4), the junction and waist rail (6) of the bored concrete pile collar tie beam (5) and stiffening pile (3) and stiffening pile
(3) junction is mounted on Two bors d's oeuveres channel steel purlin (7), and the both ends of each Two bors d's oeuveres channel steel purlin (7) are equipped with anchor plate
(8), several ribbing reinforcing bars (9) are connected between two anchor plates (8), are additionally provided on the Two bors d's oeuveres channel steel purlin (7) tiltedly
Two bors d's oeuveres channel steel purlin (7) and wedge (10) are run through simultaneously in the end of iron (10), the stiffening pile (3), and extend out to outside.
2. deep basal pit maintenance construction according to claim 1, it is characterised in that: the peripheral pile (1) is three axes agitating pile.
3. deep basal pit maintenance construction according to claim 1, it is characterised in that: the bored concrete pile (2) is armored concrete
Bored concrete pile.
4. deep basal pit according to claim 1 maintenance construction, it is characterised in that: the tilt angle of the stiffening pile (3) is
45 degree, and the spacing of two neighboring stiffening pile (3) is 1.8m.
5. deep basal pit maintenance construction according to claim 1, it is characterised in that: the dowel (4) is by multi beam steel strand wires structure
At every beam steel strand wires are twisted by seven steel wires.
6. deep basal pit maintenance construction according to claim 1, it is characterised in that: the Two bors d's oeuveres channel steel purlin (7) and anchor pad
Plate is closely welded and fixed between (8), is closely welded and fixed between the anchor plate (8) and wedge (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811032717.9A CN109162282A (en) | 2018-09-05 | 2018-09-05 | A kind of deep basal pit maintenance construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811032717.9A CN109162282A (en) | 2018-09-05 | 2018-09-05 | A kind of deep basal pit maintenance construction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109162282A true CN109162282A (en) | 2019-01-08 |
Family
ID=64894199
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811032717.9A Pending CN109162282A (en) | 2018-09-05 | 2018-09-05 | A kind of deep basal pit maintenance construction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109162282A (en) |
Citations (12)
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|---|---|---|---|---|
| CN101864773A (en) * | 2010-04-14 | 2010-10-20 | 江苏江中集团有限公司 | Deep foundation pit support process |
| KR20120013820A (en) * | 2010-08-06 | 2012-02-15 | 이상헌 | Method for Constructing Cap Beam Combined Wale For Retaining Wall |
| CN102518135A (en) * | 2011-12-29 | 2012-06-27 | 标力建设集团有限公司 | Foundation pit support construction method combining horizontal rotary jet-grouting soil bolting and bore concrete piles |
| CN202466594U (en) * | 2011-12-29 | 2012-10-03 | 标力建设集团有限公司 | Horizontal jet grouting soil anchoring and cast-in-place pile compound foundation pit supporting structure |
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| KR20120013820A (en) * | 2010-08-06 | 2012-02-15 | 이상헌 | Method for Constructing Cap Beam Combined Wale For Retaining Wall |
| CN102518135A (en) * | 2011-12-29 | 2012-06-27 | 标力建设集团有限公司 | Foundation pit support construction method combining horizontal rotary jet-grouting soil bolting and bore concrete piles |
| CN202466594U (en) * | 2011-12-29 | 2012-10-03 | 标力建设集团有限公司 | Horizontal jet grouting soil anchoring and cast-in-place pile compound foundation pit supporting structure |
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