CN107740419A - Foundation pit supporting method and raked pile - Google Patents
Foundation pit supporting method and raked pile Download PDFInfo
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- CN107740419A CN107740419A CN201710623830.3A CN201710623830A CN107740419A CN 107740419 A CN107740419 A CN 107740419A CN 201710623830 A CN201710623830 A CN 201710623830A CN 107740419 A CN107740419 A CN 107740419A
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- foundation ditch
- guan liang
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- 238000010586 diagram Methods 0.000 description 12
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- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000004873 anchoring Methods 0.000 description 2
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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
- 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
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The invention provides a kind of foundation pit supporting method and raked pile.This method includes：First support pile, the second support pile and the first Guan Liang are provided；Wherein the first support pile includes the first pile crown portion, first afterbody and connects the first pile crown portion and the first pile body portion of first afterbody, and the second support pile includes the second pile crown portion, second afterbody and the second pile crown portion of connection and the second pile body portion of second afterbody；Making the first pile body portion at the first position at the edge of foundation ditch to be dug, the first pile crown portion reaches stake bottom precalculated position to enter the soil body in the first inclination angle with gravity direction；Making the second pile body portion in the second place at the edge of foundation ditch to be dug, the second pile crown portion reaches stake bottom precalculated position to enter the soil body in the second oblique angle with gravity direction；The first direction of first position and the second place along foundation ditch edge to be dug arranges；The first Guan Liang is set to be fixedly connected respectively with first afterbody and second afterbody, and on the inside of collateral support group hole edge of first Guan Liang away from foundation ditch center.
Description
Technical field
The present invention relates to the method and raked pile of building foundation pit technical field, more particularly to a kind of pattern foundation pit supporting structure.
Background technology
Row of piles supporting is one of widest pattern foundation pit supporting structure form of current domestic application.Row of piles structure and diaphram wall phase
Than having many advantages, such as construction technology is simple, cost is low, horizontal layout is flexible.Spaced pile row retaining structure is applied to
Without underground water or allow the situation for cheating outer precipitation, continuous wall side by side is formed when setting water-stop curtain or with other hybrid stakes
When, it can also be used to weak aquifer water-bearing stratum.
Currently used campshed is Vertical Pile, and it has shortcomings when carrying out pattern foundation pit supporting structure, have impact on campshed
Using.First, the displacement at pile top of identical cutting depth is big, and internal force is big, and ground produces moderate finite deformation after making stake, jeopardizes ring around
Border.Secondly, easily cause slope protection pile to fracture when the insufficient strength of stake and make instability of foundation pit.Again, base is made using vertical campshed
It is smaller to cheat the depth that may be excavated, when cutting depth is larger, campshed is easy to that overturning occurs, therefore supporting construction needs
More heavy in section and insertion depth.
The content of the invention
In view of the foregoing, the invention provides a kind of foundation pit supporting method and raked pile, base can be preferably applied to
Cheat supporting.
One aspect of the present invention provides a kind of foundation pit supporting method.This method includes：First support pile, second are provided
Support pile and the first Guan Liang；Wherein described first support pile includes the first pile crown portion, first afterbody and connection described first
Pile crown portion and the first pile body portion of first afterbody, second support pile include the second pile crown portion, second afterbody and
Connect the second pile crown portion and the second pile body portion of second afterbody；Make at the first position at the edge of foundation ditch to be dug
The first pile body portion in the first oblique angle with gravity direction to enter the soil body, wherein the first pile crown portion reaches stake bottom
Precalculated position；Make the second pile body portion in the second place at the edge of foundation ditch to be dug to incline with gravity direction in the second inclination angle
Tiltedly enter the soil body, wherein the second pile crown portion reaches stake bottom precalculated position；The first position and the second place edge
The first direction arrangement at foundation ditch edge to be dug；Make first Guan Liang respectively with first afterbody and second afterbody
It is fixedly connected, and on the inside of collateral support group hole edge of first Guan Liang away from foundation ditch center.
In one embodiment, the first pile body portion and the second pile body portion are to inclination on the inside of foundation ditch.
In one embodiment, first inclination angle is equal to second inclination angle.
In one embodiment, the angle at first inclination angle and second inclination angle is within 5 °.
In one embodiment, first inclination angle is in the range of 0-30 °.
In one embodiment, first inclination angle is in the range of 10-25 °.
In one embodiment, first inclination angle is 0 °, and the second pile body portion tilts to foundation ditch outside.
In one embodiment, second inclination angle is in the range of 10-25 °.
In one embodiment, the first pile body portion tilts on the inside of foundation ditch, and the second pile body portion is on the outside of foundation ditch
Tilt.
In one embodiment, first inclination angle is in the range of 10-30 °, model of second inclination angle at 5-25 °
In enclosing.
In one embodiment, foundation pit supporting method also includes providing the 3rd support pile, wherein the 3rd support pile bag
Include prism of third order head, prism of third order afterbody and the connection prism of third order head and the prism of third order body portion of prism of third order afterbody；Treated on edge
The edge and the 3rd opening position between the first position and the second place for digging foundation ditch make the prism of third order body portion
The soil body is perpendicularly entered into along gravity direction, wherein, the prism of third order head reaches stake bottom precalculated position；And make first hat
Beam is fixedly connected with the prism of third order afterbody.
In one embodiment, foundation pit supporting method also includes providing the 3rd support pile, wherein the 3rd support pile bag
Include prism of third order head, prism of third order afterbody and the connection prism of third order head and the prism of third order body portion of prism of third order afterbody；Treated on edge
Dig the edge of foundation ditch and the 3rd opening position different from the first position and the second place makes the prism of third order body portion edge
Gravity direction perpendicularly enters into the soil body, wherein, the prism of third order head reaches stake bottom precalculated position；And make first Guan Liang
It is fixedly connected with the prism of third order afterbody.
In one embodiment, foundation pit supporting method also include provide the 4th support pile, the 5th support pile, the first coupling beam with
And away from foundation ditch and the second Guan Liang with first Guan Liang side by side outside foundation ditch, wherein the 4th support pile includes the 4th
Head, the 4th afterbody and connection the 4th pile crown portion and the 4th pile body portion of the 4th afterbody；5th support pile
Including the 5th pile crown portion, the 5th afterbody and connect the 5th pile crown portion and the 5th pile body portion of the 5th afterbody；Treating
The 4th opening position dug outside foundation ditch makes the 4th pile body portion to away from foundation ditch center and to be in the 3rd inclination angle with gravity direction
Obliquely enter the soil body, wherein, the 4th pile crown portion reaches stake bottom precalculated position；The 5th opening position outside foundation ditch to be dug
Make the 5th pile body portion to remote foundation ditch center and to enter the soil body in the 4th oblique angle with gravity direction, wherein, institute
State the 5th pile crown portion and reach stake bottom precalculated position；Second Guan Liang is set to consolidate with the 4th afterbody and the 5th afterbody
Fixed connection, and first coupling beam is respectively fixedly connected with a Guan Liang along the second direction for being different from the first direction
With second Guan Liang.
In one embodiment, the 3rd inclination angle is in the range of 0-30 °, scope of the 4th inclination angle at 0-30 °
It is interior.
Another aspect of the present invention provides a kind of inclination pilework.The inclination pilework includes：First support pile,
Two support piles and the first Guan Liang；Wherein described first support pile includes the first pile crown portion, first afterbody and connection described the
One pile crown portion and the first pile body portion of the stake afterbody, second support pile include the second pile crown portion, second afterbody and company
The second pile crown portion and the second pile body portion of second afterbody are met, first Guan Liang includes first party along its length
To spaced first connecting portion and second connecting portion；First afterbody and second afterbody are respectively with described
One connecting portion is fixedly connected with the second connecting portion；The first pile crown portion and the second pile crown portion are respectively to away from described
The direction of first Guan Liang is stretched out, and the first pile body portion and the second pile body portion are in the first connecting portion and described second
The orthographic projection in the line direction of connecting portion has the first angle.
In one embodiment, first angle is in the range of 0-60 °.
In one embodiment, first angle is in the range of 0-30 °.
In one embodiment, first angle is in the range of 30-60 °.
In one embodiment, the distance between the first connecting portion and the second connecting portion are first supporting
Stake or 2-2.5 times of the second support pile stake footpath.
In one embodiment, the stake footpath of first support pile and second support pile is 300mm-600mm.
In one embodiment, tilting pilework also includes the 3rd support pile；3rd support pile includes prism of third order head
Portion, prism of third order afterbody and the connection prism of third order head and the prism of third order body portion of the prism of third order afterbody, first Guan Liang is also
Including the 3rd connecting portion being arranged between the first connecting portion and the second connecting portion；The prism of third order afterbody, which is fixed, to be connected
It is connected on the 3rd connecting portion；On the line direction of the first connecting portion and the second connecting portion, the prism of third order body
The orthographic projection in portion between the orthographic projection in the first pile body portion and the orthographic projection in the second pile body portion, and respectively with institute
Stating the orthographic projection in the first pile body portion and the orthographic projection in the second pile body portion has the second angle and the 3rd angle.
In one embodiment, second angle and the 3rd angle are in the range of 0-30 °.
In one embodiment, second angle is in the range of 25-30 °, model of the 3rd angle at 20-25 °
In enclosing.
In one embodiment, tilting pilework also includes the 4th support pile and the first coupling beam；The 4th support pile bag
Include the 4th pile crown portion, the 4th afterbody and connect the 4th pile crown portion and the 4th pile body portion of the 4th afterbody；It is described
First coupling beam set along the second direction for being different from the first direction and respectively with the first connecting portion and described 4th
Afterbody is fixedly connected, and the 4th pile body portion is located at the same side of first coupling beam with the first pile body portion, and described
4th pile body portion tilts to foundation ditch lateral direction, and the first pile body portion side direction into foundation ditch tilts.
In one embodiment, tilt pilework also include the 5th support pile, the second coupling beam and with first Guan Liang
The second Guan Liang being arranged side by side；5th support pile includes the 5th pile crown portion, the 5th afterbody and connection the 5th pile crown
Portion and the 5th pile body portion of the 5th afterbody, second Guan Liang include first direction along its length spaced the
Four connecting portions and the 5th connecting portion, the 4th connecting portion and the 5th connecting portion respectively with the 4th afterbody and the described 5th
Stake afterbody is fixedly connected；Second coupling beam along be different from the first direction set and respectively with the second connecting portion and institute
The 5th afterbody is stated to be fixedly connected, the 5th pile body portion is located at the same side of second coupling beam with the second pile body portion,
And the 5th pile body portion tilts to foundation ditch lateral direction, the second pile body portion side direction into foundation ditch tilts.
In one embodiment, first Guan Liang is rectangular parallelepiped structure, and its height is not less than the 0.6 of support pile stake footpath
Times, and width is not less than support pile stake footpath.
In one embodiment, the cross section of first Guan Liang is square, and its both sides exceeds the length of support pile extremely
It is its cross section length of side 1/2 less.
Another aspect of the invention provides a kind of campshed for including above-mentioned inclination pilework.
Using the foundation pit supporting method or raked pile of the present invention, pattern foundation pit supporting structure effect can be improved.Such as can be more preferable
Suitable for soft clay area ultra-deep, the supporting of super foundation.
Brief description of the drawings
From the detailed description to the embodiment of the present invention below in conjunction with the accompanying drawings, of the invention these and/or other side and
Advantage will become clearer and be easier to understand, wherein：
Fig. 1 is the schematic diagram of foundation pit supporting method；
Fig. 2 is foundation pit supporting method schematic diagram provided in an embodiment of the present invention；
Fig. 3 is that the embodiment of the present invention uses the schematic diagram that pattern foundation pit supporting structure is carried out with the different support pile of incline direction；
Fig. 4 a and Fig. 4 b are that the embodiment of the present invention uses the support pile with three kinds of different incline directions to carry out pattern foundation pit supporting structure
Schematic diagram；
Fig. 5 a Fig. 5 b are the schematic diagram that the embodiment of the present invention carries out pattern foundation pit supporting structure using double support pile；
Fig. 6 is a kind of structural representation of raked pile provided in an embodiment of the present invention；
Fig. 7 is the structural representation for another raked pile that the embodiment of the present invention is led to；
Fig. 8 a are a kind of Double-row-piles Structure schematic diagram provided in an embodiment of the present invention；
Fig. 8 b are another Double-row-piles Structure schematic diagram provided in an embodiment of the present invention.
Embodiment
In order that those skilled in the art more fully understand the present invention, with reference to the accompanying drawings and detailed description to this hair
It is bright to be described in further detail.
Before excavation pit, it usually needs supporting is carried out to foundation ditch using support pile, for example to avoid foundation ditch that side occurs
Cave in, influence the construction of foundation ditch.Fig. 1 is a kind of schematic diagram of conventional foundation pit supporting method.Referring to Fig. 1, supporting pile structure bag
Three vertical support piles 1 are included, for example, the support pile 1 of this three signals can enter the soil body by the way of being pressed into one by one.
Support pile 1 gos deep into bottom of foundation ditch below 3 in figure, to obtain higher support strength.For example, support pile 1 be located at bottom of foundation ditch it
Under part account for 1 times -3 times of the length of support pile 1, to ensure effective support to foundation ditch.(illustrated by support pile 1 in figure
Three) for example be pressed into the soil body after, Guan Liang 2 can be fixedly connected with the outside of three support piles 1.The side of the Guan Liang 2 is for example
Foundation ditch side can be supported.
One aspect of the present invention provides a kind of foundation pit supporting method.Fig. 2 show the branch using the embodiment of the present invention
Maintaining method carries out the schematic diagram of pattern foundation pit supporting structure.Referring to Fig. 2, this method includes：First supporting 4, the second support pile 5 and are provided
One Guan Liang 6.Wherein the first support pile 4 includes the first pile crown portion 41 and first of 41, first, the first pile crown portion afterbody 42 and connection
First pile body portion 43 of stake afterbody 42.Second support pile 5 includes the second pile crown of 51, second, the second pile crown portion afterbody 52 and connection
Portion 51 and the second pile body portion 53 of second afterbody 52.Make at the first position at the edge of foundation ditch to be dug the first pile body portion 43 with
Enter the soil body in the first oblique angle with gravity direction, wherein the first pile crown portion 41 reaches stake bottom precalculated position.In base to be dug
The second place at the edge in hole makes the second pile body portion 53 to enter the soil body in the second oblique angle with gravity direction, wherein the
Two pile crown portions 51 reach stake bottom precalculated position；The first direction of first position and the second place along foundation ditch edge to be dug arranges；Make
First Guan Liang 6 is fixedly connected with first afterbody 42 and second afterbody 52 respectively, and the first side of the Guan Liang 6 away from foundation ditch center
Support on the inside of foundation ditch edge.By making support pile obliquely set, support effect can be improved.
It should be noted that above-mentioned support pile can enter the corresponding soil body by the way of press-in.Specifically, for example,
After above-mentioned first position press-in prefabricated pile, the distance that can be spaced such as 1-2 piles is pressed into next prefabricated pile.The number of support pile
Amount can determine that the present invention is without limitation according to size, piling condition, soil layer construction of foundation ditch etc..
In concrete operations, pattern foundation pit supporting structure can be implemented as follows：
(1) measurement and positioning, the pushed position of support pile is determined.
In this step, support pile should be pressed into margin of foundation pit position according to the actual size of foundation ditch, to excavate
During foundation ditch, support pile can effectively be supported to the foundation ditch side soil body, prevent from causing the soil body of foundation ditch side to cave in.
(2) it is pile press machine is in place, leveling.
In this step, pile press machine is made to reach precalculated position, so as to the stable application pressure of support pile, Jin Ergeng
Good guarantee support pile stabilization enters the soil body.
(3) hang stake and feed stake.
Specifically, in this step, pile press machine can sling support pile, such as support pile can be preset in soil layer table
Face, such as support pile can also be entered to a soil body part, complete the initial setting up of support pile.
(4) pile body portion centering straightening.
In this step, such as by support pile precalculated position is navigated to, and position error can be less than 20mm, to ensure to prop up
Fender pile effectively supports foundation ditch.In practical operation, in order to accelerate speed of application, support pile to be pressed all can be navigated to first
Precalculated position, the soil body is pressed into subsequent step, then by these oriented support piles.For example, it is also possible to one is operated every time
Or several support piles, it can be determined according to construction site and condition.Illustrated below exemplified by operating a pile every time.
For example, the stake spacing of adjacent two pile can take 2-2.5 in foundation pit supporting method provided in an embodiment of the present invention
Times stake footpath.The deep angle of inclination of stake can be 0-30 °, and further, the deep angle of inclination of stake can be 10-25 °.For example, not
Angle of inclination with stake can be with identical or different, and the incline direction of piles with different can be different.
In some embodiments of the invention, the pile crown portion (fore-end for entering the soil body) of all stakes is for example both facing to base
Hole inner or outer side tilt, i.e., these incline direction it is identical.For example, Fig. 2 is the pile crown portion 41 for illustrating all support piles,
51 to inclination on the inside of foundation ditch.So as to simplify difficulty of construction, construction cost is reduced, while makes periphery earth stress consistent, is improved
Supporting effect.Further, the difference at these angle of inclination is for example within 5 °, for example, the angle of inclination of these support piles
It is completely the same, to ensure support pile even support foundation ditch, avoid the supporting effect difference of part stake and cause the situation of foundation pit collapse.
In some other embodiments of the present invention, the incline direction of support pile can be different.Fig. 3 illustrates support pile 4,
5 pile crown portion tilts to the direction of foundation ditch inner side and outer side 4 respectively, and on the length direction of Guan Liang 6, support pile 4,5 is intersected with each other.
By the incline direction and angle for setting stake spacing, adjusting piles with different, construction environment can be preferably applicable, improves supporting effect
Fruit.
Referring to Fig. 4 a and Fig. 4 b, in some embodiments of the invention, for example, it is also possible to be some support piles (such as Fig. 4 a
With the support pile 8 shown in Fig. 4 b) with gravity direction angle be zero, i.e. the vertical entrance soil body of these support piles.Illustrate in Fig. 5
Support pile 8 includes pile crown portion 81, stake afterbody 82 and connection pile crown portion 81 and the pile body portion 83 of stake afterbody 82, wherein pile crown portion
81 enter stake bottom precalculated position, and stake afterbody 82 is fixedly connected with the downside of the first Guan Liang 6.By making support pile vertically into soil
Body, difficulty of construction can be reduced under the construction environment of complexity.Meanwhile other support piles (support pile 4 and 5 in such as Fig. 3) can
With in a certain angle with gravity direction, i.e., obliquely enter the soil body, so as to the comprehensive execution conditions according to reality and construction ring
The selection support pattern of the adaptability such as border.
Preferably, in some method for protecting support, for example, vertical support pile can be set simultaneously, and to inside and outside foundation ditch
The inclined support pile in both sides, to obtain more preferable supporting effect.With continued reference to Fig. 4 a and Fig. 4 b, support pile can be included to base
The hole support pile 4 that is obliquely installed of inner side and to inclined support pile 5 on the outside of foundation ditch and the support pile 8 vertically into the soil body.This
Outside, referring to Fig. 4 a and Fig. 4 b, the support pile set in this way around foundation ditch, such as can be arranged with certain rule.For example, base
The pile crown portion of first support pile of a certain position in hole outside towards tilting on the inside of foundation ditch, adjacent thereto second support pile
Pile crown portion is vertically into the soil body, and the adjacent with second support pile the 3rd rolls with the pile crown portion of support pile towards outside foundation ditch
Tiltedly, towards inclination on the inside of foundation ditch, the pile crown portion of the adjacent thereto the 5th support pile is vertically entered in the pile crown portion of the 4th support pile
Enter the soil body, and the adjacent with the 5th support pile the 6th with support pile pile crown portion towards tilting on the outside of foundation ditch, and by this rule
Rule sets more root support piles with this.In addition, the support pile of three kinds of modes can also be by the arrangement mode different from said sequence
Arrangement, will not be described here.By tilting support pile using to different directions simultaneously, and it is allowed to set gradually according to certain rules,
Such as can be more uniformly stressed the soil body 32 of margin of foundation pit, supporting effect is more preferable, and whole raked pile also will more as entirety
Add stabilization.
In the above-described embodiments, i.e., in the case of the support pile simultaneously including three kinds of modes, three kinds can further be set
The angle of inclination of support pile.Pile crown portion to the angle of inclination of inclined support pile on the inside of foundation ditch can in the range of 10-30 °,
Pile crown portion can be in the range of 5-25 ° to the angle of inclination of inclined support pile on the outside of foundation ditch.By further setting to base
The angle of inclination and the angle of inclination to inclined support pile on the inside of foundation ditch of the inclined support pile in hole outside, can be applied in reduction
On the basis of work difficulty, improve pattern foundation pit supporting structure effect.
(5) piling.
Push every time, for example, stake is goed deep into soil may be about 1.5~2.0m.Then pine folder, rise, then press, then press from both sides.Such as
This is repeated, by a section stake pressure.When a section stake is depressed into away from 80~100cm of ground, pile extension can be carried out or be put into pile follower
Device, stake is depressed into designed elevation.Stake bottom depth for example can be 2~2.5 times of excavation of foundation pit depth.
(6) pile extension
In certain embodiments, pile extension operation can be carried out in a welding manner.First corner is spot welded during welding and fixed, so
After be symmetrically welded.Weld seam should ensure that quality and design size.
(7) pile follower
The pile follower operation of static pressed pile can be carried out using the special Pile feeder (such as iron bag concrete) of in-situ precast.Pile follower
In operation, stake can be pushed always, untill final pressure control condition is met by the stake top absolute altitude of piling.
(8) piling is terminated
(9) it is pressed into next pile
It can use and jump pile construction method, 1~2 pile of interval is pressed into next prefabricated pile, repeats the above steps, until will
All piles are pressed into the soil body.
It should be noted that under normal circumstances, while campshed construction is tilted, such as water seal curtain can also be carried out
Construction.Construction location lateral extent about outside foundation ditch side is tilted at the stake afterbody 0.5-1m of campshed, (the i.e. construction position of water seal curtain
Put the position outside support pile is away from foundation ditch), and the absolute altitude at the mixing pile stake bottom of water seal curtain and raked pile stake bottom absolute altitude phase
Together.
In certain embodiments, for example, the construction procedure of water seal curtain can be carried out as follows：
1st, position：Deep mixer, which reaches, refers to fixed pile, centering.
2nd, sinking is stirred in advance：After the cooling water circulation of deep mixer is normal, starts mixer motor, loosen mixer and hang
Rope makes mixer cut native sinking along leading truck stirring.
3rd, cement mortar is prepared：When deep mixer sinks to certain depth, that is, start to stir by the match ratio that design determines
Cement mortar is mixed, pours into cement mortar in aggregate bin before treating mud jacking.
4th, lifting whitewashing stirring：After deep mixer sinks to projected depth, open slurry pump and cement mortar is pressed into ground
In, and while whitewashing, while rotate, while in strict accordance with design determine lifting speed lifting deep mixer.
5th, upper and lower stirring is repeated：When deep mixer is promoted to the top surface absolute altitude of projected depth, the cement mortar in aggregate bin
Should just it empty.To make weak soil and cement mortar stir, mixer can be sunk in soil in rotation again, to design reinforcement
Mixer is being lifted out ground after depth.
6th, clean：Cement mortar remaining in whole pipelines is cleaned, and the weak soil for being adhered to stirring-head is cleaned up.
7th, shift：Deep mixer is moved into next position, repeated the above steps.
By setting water seal curtain to each support pile, it can be ensured that support pile reliably works, in strengthening supporting stake intensity
While, the infiltration phenomenon that may occur during excavation pit can be avoided.
It is pointed out that under normal circumstances, the construction of the every support pile property entered water seal curtain respectively can be directed to.Example
Such as, can be after support pile is all pressed into the soil body, uniformly the property entered water seal curtain is constructed, to improve efficiency of construction.But also may be used
Be it is every press-in a piece support pile after, that is, the property entered water seal curtain construct, the invention is not limited in this regard.
In some embodiments of the invention, such as Guan Liang construction can be carried out after the construction of water seal curtain is completed.Guan Liang
Construction can be carried out as follows：
1st, the Guan Liang earthwork is excavated using mechanical subregion, such as is first excavated the first layer earthwork to support pile and designed stake top (before i.e.
Stake afterbody described in text) elevation location, start to abolish a laitance to designed elevation after soil more than removing.The concrete of stake core top surface will
Dabbing processing, removes stake top scum silica frost.As designed elevation pile crown concrete strength does not reach design requirement, must continue to abolish until concrete quality
Reach design requirement, together pouring molding during insufficient absolute altitude section Guan Liang concrete.
2nd, inter-pile soil for example manually leveling to hat bottom elevation, and ram tamp it is closely knit.
3rd, reinforcement fabrication can be carried out by Guan Liang section arrangement of reinforcement after stake tail end is abolished.Steel Reinforcing Bar Material, colligation error ensure full
Sufficient design and construction code requirement.The binding site poured to Guan Liang segmentation for example can be with reserved steel bar.
4th, to Guan Liang absolute altitude check simultaneously installation form.Must ensure during template support form stable, firmly, to prevent pouring
Template deformation during concrete.Template sectional dimension is made by Guan Liang section.
5th, reinforced bar engineering is completed.Vertical muscle should use preferably with HRB335 levels or HRB400 level reinforcing bars, stirrup and tension rib
HPB300 levels and HRB335 level reinforcing bars.Lateral longitudinal muscle diameter is no less than 20mm, and spacing not should be greater than 200mm；Top bottom surface indulges muscle
Diameter is no less than 20mm, and spacing not should be greater than 300mm；Stirrup diameter is no less than 8mm, and spacing not should be greater than 250mm；Draw
Knot muscle diameter should use 6~12mm, and spacing not should be greater than 500mm.
6th, concreting and maintenance are completed.Strength grade of concrete is not lower than C25, and campshed cage bar anchors into Guan Liang and should not
Less than 35d (d is bar diameter).
Embodiments of the invention give water seal curtain and the set-up mode of Guan Liang, but the present invention is not intended to limit water proof
The form of construction work of curtain and Guan Liang, those skilled in the art can use other forms of construction work or above-mentioned form of construction work carried out
Improve, to obtain more preferable construction effect.
The double-row pile schematic diagram of Fig. 5 a one embodiment of the invention.Referring to Fig. 5 a, in one embodiment, the pattern foundation pit supporting structure side
Method is preced with also including the 4th supporting of offer, the 9, the 5th support pile 10, the first coupling beam 11 and away from foundation ditch outside foundation ditch and with first
The second Guan Liang 13 of beam 6 side by side.Wherein the 4th support pile 9 includes the 4th pile crown of the 4th pile crown portion, the 4th afterbody and connection
Portion and the 4th pile body portion of the 4th afterbody；5th support pile 10 includes the 5th pile crown portion, the 5th afterbody and connection the 5th
Pile crown portion and the 5th pile body portion of the 5th afterbody.The 4th opening position outside foundation ditch to be dug makes the 4th pile body portion to away from base
Hole center and to enter the soil body 32 with gravity direction in the 3rd oblique angle, wherein, the 4th pile crown portion reaches stake bottom pre-determined bit
Put；The 5th opening position outside foundation ditch to be dug makes the 5th pile body portion to away from foundation ditch center and to incline with gravity direction in the 4th
Angle lapping tiltedly enters the soil body 32, wherein, the 5th pile crown portion reaches stake bottom precalculated position.Afterwards, foundation pit supporting method also includes making
Second Guan Liang 13 is fixedly connected with the 4th afterbody and the 5th afterbody, for example, the 4th afterbody and the 5th afterbody can be with
The close Foundation Pit bottom side of the second Guan Liang 13 is not connected；And make the first coupling beam 11 along second different from the first direction
Direction is respectively fixedly connected with the first Guan Liang 6 and the second Guan Liang 13, for example, second direction is perpendicular to the direction at foundation ditch edge,
I.e. perpendicular to the direction of first direction.By setting the second Guan Liang 13, the 4th support pile 9 and the 5th support pile 10, one can be entered
Step improves the bulk strength of raked pile pile body, and then further improves supporting effect.
In this embodiment, the 3rd inclination angle, further can be in the range of 5-25 ° in the range of 0-30 °.4th inclines
Angle can be in the range of 5-25 ° in the range of 0-30 °, and further.In addition, the 4th support pile 9 and the 5th support pile 10
Pile crown portion can both be tilted to away from the direction on the inside of foundation ditch, side direction can also be tilted into foundation ditch.Preferably, first
The pile crown portion of the support pile 10 of fender pile 9 and the 5th tilts to the direction away from foundation ditch, i.e., incline direction as shown in Figure 5 a, passes through
The first support pile 9 and the second support pile is tilted respectively to both sides, the overall mechanical properties of support pile can be improved, so that branch
Protect better.Meanwhile the two can also be respectively to tilting inside and outside foundation ditch.Or the two can also be vertically into soil
Body or only a support pile perpendicularly enters into the soil body, and another support pile is obliquely installed.By further adjusting supporting
The set-up mode of stake, angle of inclination, the soil body of varying environment is adapted to, and targetedly improves the supporting effect of foundation ditch.
Fig. 5 b are the method for protecting support schematic diagram of another double-row pile of the present invention.Referring to Fig. 7, the first hat on the inside of foundation ditch
Three support piles 4 that beam 6 is connected are vertical with gravity direction, and be fixedly connected away from the second Guan Liang 13 on the inside of foundation ditch
The pile crown portion of three support piles 5 side direction into foundation ditch tilts, and the pile crown portion of such as support pile 5 and support pile 4 are substantially one
In individual plane.By using the mode shown in Fig. 5 b, construction environment can be well adapted in foundation ditch limited inside space,
With preferable application prospect.
In addition, with continued reference to Fig. 5 a and Fig. 5 b, the second company can also be set between the first Guan Liang 6 and the second Guan Liang 13
Beam.Specifically, the both ends of the second coupling beam 12 can be fixedly connected with the first Guan Liang 6 and the second Guan Liang 13 respectively, to improve supporting
The overall intensity of stake.It is appreciated that more coupling beams can be set between the first Guan Liang 6 and the second Guan Liang 13, further to carry
The bulk strength of high support pile.In addition, the first Guan Liang 6 and the second Guan Liang 13 can correspond to Guan Liang respectively with the set location of coupling beam
The support pile of upper setting.For example, as shown in Figure 5 a, one end of the first coupling beam 11 is preced with the stake afterbody of the first support pile 4 and first
The opening position that is fixedly connected of beam 6 is fixed with the first Guan Liang 6, and the other end of the first coupling beam 11 is in the stake afterbody of the 4th support pile 4
Fixed with the opening position that is fixedly connected of the second Guan Liang 13 with the second Guan Liang 13, to simplify difficulty of construction, improve the whole of supporting construction
Body intensity.
In addition, in some embodiments of the invention, coupling beam can also be obliquely installed between two Guan Liangs, i.e., at least one company
Beam is in respectively the angle not equal to 90 ° with the first Guan Liang 6 and the second Guan Liang 13.Or it can also be set between two Guan Liangs including intersection
The coupling beam put.For example, multiple parallel to each other and on the basis of being respectively perpendicular to two Guan Liangs, formed along Guan Liang and outside coupling beam
The diagonal of rectangular configuration one or two coupling beams are set, so as to effectively improve the bulk strength of supporting construction, improve supporting
Effect.
In the practical operation of pattern foundation pit supporting structure, it can be selected according to situations such as the soil layer feature residing for foundation ditch, surrounding enviroment
Appropriate pattern foundation pit supporting structure mode.Support pile is briefly introduced several support patterns of foundation ditch below, but is not intended to limit
The system present invention.
1st, cantilever pile supporting.When excavation of foundation pit is shallower, geological conditions is preferable, environmental requirement (especially deformation requirements) is not high
When, cantilever pile support form can be used.After cantilever pile pile strength reaches regulation requirement, it is possible to carry out opening for soil layer
Dig.
2nd, Internal-shoring Supporting.When excavation of foundation pit area is larger, ground is weak, environmental requirement is high, inner bearing type can be used
Supporting.Pit earthwork is excavated to the base surface at first of reinforced concrete brace bottom first, then chisels supporting construction
With the joint face of purlin, and reinforced concrete support cushion construction is carried out, subsequent colligation spacer bar, prop up vertical side template, complete
After-pouring concrete is simultaneously conserved, and form removal and cleaning work are carried out when concrete strength reaches regulation.
3rd, anchor formula supporting is drawn.When foundation ditch soil layer condition is preferable, reaches and draw anchor condition, and when surrounding enviroment are less demanding,
It can use and draw anchor formula supporting.When foundation ditch soil layer first is excavated at first of anchor pole center line certain depth below, machine is utilized
Tool drills, and makes anchor pole according to the rules and inserts and send rod member, then carries out slip casting and form anchoring section, finally when anchoring body reaches certain
Tensioning and locking are carried out after intensity.
It may be noted that for the foundation ditch of stage excavation, for example, different campshed support forms can be directed to, repeat above-mentioned
Step carries out construction until being excavated to the bottom of foundation ditch.After foundation ditch is dug, such as Foundation Pit bottom can be cleared up, be whole
It is flat, and carry out subsequent work.
One aspect of the present invention provides a kind of inclination pilework.When this raked pile is for example mainly used in foundation ditch excavation
Soil body support, be particularly used to place the foundation ditch side soil body and cave in.Fig. 6 is the raked pile structural support of the embodiment of the present invention
Schematic diagram during foundation ditch.Referring to Fig. 6, the inclination pilework includes：First support pile 4, the second support pile 5 and the first Guan Liang 6.
Wherein the first support pile 4 includes 41, first, the first pile crown portion afterbody 42 and connects the of the first pile crown portion 41 and stake afterbody 42
One pile body portion 43.Second support pile 5 includes 51, second, the second pile crown portion afterbody 52 and the second pile crown portion 51 of connection and second
Second pile body portion 53 of afterbody 52.First Guan Liang 6 includes the spaced first connecting portion of first direction along its length
And second connecting portion.First afterbody 42 and second afterbody 42 are fixedly connected with first connecting portion and second connecting portion respectively.
First pile crown portion 41 and the second pile crown portion 42 are stretched out to the direction away from the first Guan Liang 6 respectively, and the first pile body portion 43 and described
Second pile body portion 53 the line direction of first connecting portion and the second connecting portion (for elongate configuration as shown in Figure 6,
The line direction is the length direction of Guan Liang) orthographic projection there is the first angle.
Inclination pilework provided in an embodiment of the present invention can obliquely (such as to foundation ditch on the inside of tilt) supporting foundation pit, and
Support strength is big, stability is good, so as to effectively avoid foundation ditch from caving in.
In the above-described embodiments, the first angle is in the range of 0-60 °.Further, first angle can be in 0-
In the range of 30 ° or 30-60 °.For example, when the first support pile 4 and the second support pile 5 be arranged in parallel, the angle of the two is 0.It is right
In this pilework, in use, can for example make its along with gravity is in a certain angle inclined enters the soil body.It should be understood that
It is that the first support pile 4 and the second support pile 5 both can be that the two is in the orthographic projection of Guan Liang length direction in 0-60 ° of angle
X-shaped, i.e. two support piles are tilted to different directions or the two is tilted to same direction, and simply angle of inclination is not
Together.Or in raked pile in use, can also be one of support pile be used for it is vertical it is (vertical with gravity direction) enter the soil body,
Another support pile tilts to foundation ditch inner or outer side.By setting the supporting angle and incline direction of support pile, can improve
Supporting effect, and different types of soil structures can be preferably applicable, it is also possible to avoid excessive by support pile angle of inclination
The problems such as cost brought increases, and difficulty of construction increases.
In one embodiment, the distance between first connecting portion and the second connecting portion (namely the first support pile
With the spacing distance of the second support pile) for 2-2.5 times of the first support pile 4 or second 5 footpaths of support pile.In order that support pile
With preferable supporting effect, meanwhile, after support pile and the first Guan Liang 6 are fixed, overall construction intensity is sufficiently large, should adjust
Density of setting of the whole support pile along Guan Liang.By selecting the spacing distance of two support piles, can ensure to imitate pattern foundation pit supporting structure
While fruit, the quantity of support pile is saved, reduces cost.For example, the stake footpath of the first support pile 4 and the second support pile 5 is
300mm-600mm, so as to which the distance between two neighboring support pile can be 600mm-1500mm.
Fig. 7 is a kind of inclination pilework provided in an embodiment of the present invention.Referring to Fig. 8 a and Fig. 8 b, in this embodiment, incline
Taper pile structure also includes the 3rd support pile 8.3rd support pile 8 includes prism of third order head 81, prism of third order afterbody 82 and connection the 3rd
Pile crown portion 81 and the prism of third order body portion 83 of prism of third order afterbody 82.First Guan Liang 6 also includes connecting different from first connecting portion and second
The 3rd connecting portion between socket part, prism of third order afterbody 82 are fixedly connected on the 3rd connecting portion.Connected in first connecting portion and second
On the line direction (Guan Liang length direction) in portion, the orthographic projection in prism of third order body portion 83 is located at the orthographic projection and in the first pile body portion 43
Between the orthographic projection in two pile body portions 53, and respectively with the positive throwing of the first pile body portion 43 and the second pile body portion 53 in the line direction
Shadow has the second angle and the 3rd angle.By setting the 3rd support pile, the stability for tilting pilework can be further improved,
Improve support effect.
It is pointed out that because the first Guan Liang 6 shown in figure is linear structure, therefore, above-mentioned first connecting portion with
Even if the length direction of the line direction of second connecting portion also the first Guan Liang 6.It should be appreciated that for using the of non-linear structure
One Guan Liang, the line direction can be with Guan Liang length direction differences.In addition, the 3rd connecting portion can be located at first connecting portion and
Between second connection, it can also be located at outside first connecting portion or second connecting portion.In the raked pile supporting using the embodiment
When, for example, what the 3rd supporting beam 8 can be vertically enters the soil body 32, and the first support pile 4 and the second support pile for example can be to bases
Hole both sides are tilted into the soil body.31 in Fig. 8 illustrate bottom of foundation ditch, and 32 illustrate the soil body on the outside of foundation ditch.
Further, it is also possible to the angle of inclination of support pile is further set, to obtain optimal supporting effect, and can not
Increase support cost.For example, in one embodiment, the second angle and the 3rd angle are in the range of 0-30 °.For example, second
Angle is in the range of 25-30 °, and the 3rd angle is in the range of 20-25 °.That is the first support pile 4 and the second support pile 5 are relative
Being tilted respectively to different directions in foundation ditch, the 3rd support pile 8 is vertically arranged, and further by setting the He of the first support pile 4
The angle of inclination of second support pile 5 so that support pile respectively inside and outside and vertical direction simultaneously supporting foundation pit, therefore, can
Further to improve the supporting intensity to foundation ditch, improve supporting effect.
Fig. 8 a are a kind of double inclination pilework provided in an embodiment of the present invention.Referring to Fig. 8 a, in this embodiment, tilt
Pilework also includes the 4th support pile 9, the 5th support pile 10, the first coupling beam 11, the second coupling beam 12 and in the remote of the first Guan Liang 6
The second Guan Liang 13 that foundation ditch side is arranged side by side with the first Guan Liang 6.For example, the 4th support pile 9 and the 5th support pile 10 and first
The support pile 5 of support pile 4 and second is oppositely arranged.Specifically, the 4th support pile 9 is oppositely arranged with the first support pile 4, for example, the
The pile crown portion of four support piles 9 tilts to inclination on the outside of foundation ditch, the pile crown portion of the first support pile 4 to foundation ditch inner side.For example, the 4th
The angle of inclination of the support pile 4 of fender pile 9 and first can be with identical.Equally, the 5th support pile 10 is oppositely arranged with the second support pile 5,
For example, the pile crown portion of the 5th support pile 10 tilts to inclination on the outside of foundation ditch, the pile crown portion of the second support pile 5 to foundation ditch inner side.Example
Such as, the angle of inclination of the 4th support pile 10 and the second support pile 5 can be with identical.First Guan Liang 6 for example can be with the second Guan Liang 13
It is arranged in parallel.Stake afterbody of second Guan Liang 13 respectively with the 4th support pile 9 and the 5th support pile 10 is fixedly connected.First coupling beam 11
Connect with the second coupling beam 12 and be fixedly connected with the first Guan Liang 6 and the second Guan Liang 13 respectively.For example, the first coupling beam 11 and the second coupling beam
12 be arranged in parallel.By using the support pile of two-row structure, support pile overall structure can be made more firm, so as to more preferably
Supporting foundation pit.
It should be noted that the both ends of the first coupling beam 11 can with the position that is fixedly connected of the first Guan Liang 6 and the second Guan Liang 13
With identical with the fixed connection point of the stake afterbody of the first support pile 4 and the 4th support pile 9 positioned opposite to each other respectively.Equally,
The both ends of second coupling beam 12 and the first Guan Liang 6 and the second Guan Liang 13 be fixedly connected position can respectively with it is positioned opposite to each other
The second support pile 5 it is identical with the fixed connection point of the stake afterbody of the 4th support pile 10.So as to by the way that fixed connection point is set
In roughly the same position, coupling beam, Guan Liang and support pile is fitted to each other, and then difficulty of construction can be simplified, it is strong to improve connection
Degree.
Fig. 8 b are a kind of double inclination pilework provided in an embodiment of the present invention.Compared with Fig. 8 a, Fig. 8 b are illustrated double
The main distinction of row's raked pile is, on the length direction of the first Guan Liang 1, first row support pile and second row support pile support pile
Orthographic projection it is intersected with each other, and the pile crown portion of second row support pile is to planar tilt where first row support pile.For example, first row
The pile crown portion of support pile and the pile crown portion of second row support pile are generally in same surface, so as to equally deep into the soil body
Degree, and then more preferable supporting foundation pit.When the double raked pile actually uses, for example, first row support pile can vertically enter
Enter the soil body and on the inside of foundation ditch, second row support pile pile head side direction into foundation ditch tilts and away from the inside of foundation ditch.Should
Support pile can preferably be applied to the limited situation of foundation pit construction environment, and have good supporting effect.
In the above-described embodiments, the first Guan Liang for example can be rectangular parallelepiped structure, its height (gravity side during actual use
To size) be not less than 0.6 times of support pile stake footpath, and width is not less than support pile stake footpath.The cross section of first Guan Liang is for example
Can be square, and the both sides of the first Guan Liang in the width direction are at least the first Guan Liang beyond the length of support pile
The 1/2 of the cross section length of side.Pass through the shape of the first Guan Liang of setting and the correspondingly-sized relation with support pile, it can be ensured that raked pile
Stability Analysis of Structures, so as to more preferable supporting foundation pit.
Another aspect of the invention provides a kind of campshed for including above-mentioned inclination pilework.Obviously, the campshed has
Techniques discussed above effect, will not be described here.
It is described above various embodiments of the present invention, described above is exemplary, and non-exclusive, and
It is not limited to disclosed each embodiment.In the case of without departing from the scope and spirit of illustrated each embodiment, for this skill
Many modifications and changes will be apparent from for the those of ordinary skill in art field.Therefore, protection scope of the present invention should
It should be defined by scope of the claims.
Claims (10)
- A kind of 1. foundation pit supporting method, it is characterised in that including：First support pile, the second support pile and the first Guan Liang are provided；Wherein described first support pile includes the first pile crown portion, the One afterbody and the first pile crown portion and the first pile body portion of first afterbody are connected, second support pile includes the Two pile crown portions, second afterbody and connection the second pile crown portion and the second pile body portion of second afterbody；Make the first pile body portion at the first position at the edge of foundation ditch to be dug to enter to bury in the first inclination angle with gravity direction Body, wherein the first pile crown portion reaches stake bottom precalculated position；Make in the second place at the edge of foundation ditch to be dug the second pile body portion with gravity direction in the second oblique angle Into the soil body, wherein the second pile crown portion reaches stake bottom precalculated position；The first position and second place edge wait to dig The first direction arrangement at foundation ditch edge；First Guan Liang is set to be fixedly connected respectively with first afterbody and second afterbody, and first Guan Liang On the inside of collateral support group hole edge away from foundation ditch center.
- 2. foundation pit supporting method according to claim 1, it is characterised in that the first pile body portion and second pile body Portion is to inclination on the inside of foundation ditch.
- 3. foundation pit supporting method according to claim 2, it is characterised in that scope of first inclination angle at 10-25 ° It is interior.
- 4. foundation pit supporting method according to claim 1, it is characterised in that first inclination angle is 0 °, described second Body portion tilts to foundation ditch outside.
- 5. foundation pit supporting method according to claim 1, it is characterised in that also include providing the 3rd support pile, wherein institute Stating the 3rd support pile includes the 3rd of prism of third order head, prism of third order afterbody and the connection prism of third order head and prism of third order afterbody the Pile body portion；Make described the at the edge along foundation ditch to be dug and the 3rd opening position that is different from the first position and the second place Three pile body portions perpendicularly enter into the soil body along gravity direction, wherein, the prism of third order head reaches stake bottom precalculated position；AndFirst Guan Liang is set to be fixedly connected with the prism of third order afterbody.
- 6. foundation pit supporting method according to claim 1, it is characterised in that also include provide the 4th support pile, the 5th Fender pile, the first coupling beam and remote foundation ditch and the second Guan Liang with first Guan Liang side by side outside foundation ditch, wherein the described 4th Support pile includes the 4th pile crown portion, the 4th afterbody and the 4th pile body for connecting the 4th pile crown portion and the 4th afterbody Portion；5th support pile includes the 5th pile crown portion, the 5th afterbody and connects the 5th pile crown portion and the 5th afterbody The 5th pile body portion；The 4th opening position outside foundation ditch to be dug makes the 4th pile body portion to away from foundation ditch center and to be in gravity direction Enter the soil body 3rd oblique angle, wherein, the 4th pile crown portion reaches stake bottom precalculated position；Outside foundation ditch to be dug Five opening positions make the 5th pile body portion to remote foundation ditch center and to enter the soil body in the 4th oblique angle with gravity direction, Wherein, the 5th pile crown portion reaches stake bottom precalculated position；Second Guan Liang is set to be fixedly connected with the 4th afterbody and the 5th afterbody, andFirst coupling beam is set to be respectively fixedly connected with a Guan Liang and described along the second direction for being different from the first direction Second Guan Liang.
- A kind of 7. raked pile, it is characterised in that including：First support pile, the second support pile and the first Guan Liang；Wherein described first support pile includes the first pile crown portion, first afterbody and connects the first pile crown portion and the stake tail The first pile body portion in portion, second support pile include the second pile crown portion, second afterbody and connection the second pile crown portion and Second pile body portion of second afterbody, the first direction spaced first that first Guan Liang includes along its length connect Socket part and second connecting portion；First afterbody and second afterbody are fixed with the first connecting portion and the second connecting portion respectively to be connected Connect；The first pile crown portion and the second pile crown portion are stretched out to the direction away from first Guan Liang respectively, and described first Pile body portion and the second pile body portion have in the orthographic projection of the first connecting portion and the line direction of the second connecting portion First angle.
- 8. raked pile according to claim 7, it is characterised in that between the first connecting portion and the second connecting portion Distance be 2-2.5 times of first support pile or the second support pile stake footpath.
- 9. raked pile according to claim 8, it is characterised in that the stake of first support pile and second support pile Footpath is 300mm-600mm.
- 10. raked pile according to claim 7, it is characterised in that also including the 3rd support pile；The 3rd support pile bag Include prism of third order head, prism of third order afterbody and connect the prism of third order head and the prism of third order body portion of the prism of third order afterbody, it is described First Guan Liang also includes the 3rd connecting portion different from the first connecting portion and the second connecting portion；The prism of third order afterbody It is fixedly connected on the 3rd connecting portion；On the line direction of the first connecting portion and the second connecting portion, described The orthographic projection in three pile body portions divides between the orthographic projection in the first pile body portion and the orthographic projection in the second pile body portion Not there is the second angle and the 3rd angle with the orthographic projection in the first pile body portion and the orthographic projection in the second pile body portion.
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| CN201710623830.3A CN107740419A (en) | 2017-07-27 | 2017-07-27 | Foundation pit supporting method and raked pile |
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| CN111287194A (en) * | 2020-02-19 | 2020-06-16 | 天津大学 | Recyclable foundation pit supporting structure using inclined steel sheet piles and supporting method thereof |
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Application publication date: 20180227 |