CN108951661A - The construction method of double cambered surface piling bars, underground support structure and underground support structure - Google Patents
The construction method of double cambered surface piling bars, underground support structure and underground support structure Download PDFInfo
- Publication number
- CN108951661A CN108951661A CN201811009733.6A CN201811009733A CN108951661A CN 108951661 A CN108951661 A CN 108951661A CN 201811009733 A CN201811009733 A CN 201811009733A CN 108951661 A CN108951661 A CN 108951661A
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- cambered surface
- wing
- edge
- double cambered
- bored concrete
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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
- 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
- E02D19/18—Restraining of underground water by damming or interrupting the passage of underground water by making use of sealing aprons, e.g. diaphragms made from bituminous or clay material
-
- 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
- E02D5/24—Prefabricated piles
- E02D5/28—Prefabricated piles made of steel or other metals
-
- 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
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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Hydrology & Water Resources (AREA)
- Piles And Underground Anchors (AREA)
- Bulkheads Adapted To Foundation Construction (AREA)
Abstract
The present invention discloses double cambered surface piling bars, including a pair of spaced edge of a wing first；And web, web are arranged between a pair of edge of a wing and are connected on a pair of edge of a wing；Any edge of a wing all has a lateral surface in arc-shaped for deviating from web.Secondly, providing a kind of underground support structure, which is alternately arranged by double cambered surface piling bars and bored concrete pile and is formed, and has gap between adjacent double cambered surface piling bars and bored concrete pile.In above-mentioned double cambered surface piling bars and underground support structure, effectively the gap closing between two adjacent bored concrete piles can be fallen using the piling bar, water blocking requirement can be met by being formed by water-stop curtain without cement mixing method.The application also provides the construction method of above-mentioned underground support structure, step are as follows: (1) sink double cambered surface piling bars；(2) construction bored concrete pile forms supporting construction.This method can form the underground support structure with good water blocking effect.
Description
Technical field
The present invention relates to the supporting construction components during Underground Construction, supporting construction and the supporting construction
A kind of construction method, and in particular to the construction method of double cambered surface piling bars, underground support structure and underground support structure.
Technical background
In the supporting construction of foundation pit, for bored concrete pile since its rigidity is larger, bending resistance is strong, deforms relatively small, economy
The advantages such as profitable, become a kind of common support pile, but the characteristics of due to its own construction, two adjacent bored concrete piles it
Between can not be overlapped, at least will be there are the gap of 100-200mm between stake, water blocking effect is poor, in order to make up water blocking effect, one
As it is applied in combination with cement mixing method, bored concrete pile be used for bending resistance, cement mixing method formed water-stop curtain rise water blocking make
With.
Bored concrete pile and cement mixing method are applied in combination, although ensure that water blocking effect, extend construction period and
Construction cost.
Summary of the invention
The purpose of the present invention, which first consists in, provides a kind of double cambered surface piling bars, can be effectively adjacent by two using the piling bar
Bored concrete pile between gap closing fall, water blocking requirement can be met by being formed by water-stop curtain without cement mixing method, tool
The technical solution of body are as follows:
Double cambered surface piling bars, including a pair of of edge of a wing, a pair of edge of a wing interval setting；And at least one block of web, web arrangement
Between a pair of edge of a wing and it is connected on a pair of edge of a wing；Any edge of a wing all has a lateral surface for deviating from web, the outside
Face web direction it is recessed and in arc-shaped.
When in use, which is alternately arranged with bored concrete pile, and the cement mortar in hole for grout pile can penetrate into stake
In the soil body around hole, when the spacing distance of double cambered surface piling bars and bored concrete pile is smaller, these penetrate into the cement bonded sand around stake holes
Slurry can collide on the lateral surface on the edge of a wing of double cambered surface piling bars, and be agglomerated on the lateral surface on the edge of a wing, when these cement mortar are complete
After full solidification, the shell with low permeability will form, which closes the gap between bored concrete pile and double cambered surface piling bars, from
And double cambered surface piling bars close the gap between two adjacent bored concrete piles, make to be formed by gear by bored concrete pile and double cambered surface piling bars
Wall has water retaining function,, not only can be on the basis of ensure that water blocking effect due to avoiding the construction of cement mixing method
Shorten construction period, certain construction cost can also be lowered.
Preferably, the articulamentum with one fixed width, the central angle of the lateral surface on the edge of a wing between the double cambered surface piling bars of guarantee
It is 30-120 °.
Preferably, the edge of a wing is arc panel.The edge of a wing specifically can be rolled or be cut by steel pipe using steel plate.
Further, the cross section of double cambered surface piling bars is in relative to a symmetrical axisymmetric axisymmetric shape, symmetry axis warp
Cross the center of arc of the lateral surface on the pair of edge of a wing.The design makes double cambered surface piling bars have substantially symmetric structure, is conducive to
Steadily sink in the soil body, reduces inclined probability.
Preferably, the arc radius of the lateral surface on a pair of of edge of a wing is identical.Due in an engineering construction, same supporting knot
The diameter of bored concrete pile in structure is all the same, corresponding, and the circular arc of the edge of a wing lateral surface of double cambered surface piling bars uses identical radius
It is a relatively good selection.In addition, also helping the batch machining on the edge of a wing using identical arc radius, double cambered surfaces are improved
The processing efficiency of piling bar.
The another object of the application is to provide a kind of underground support structure, the underground support structure by double cambered surface piling bars and
Bored concrete pile is alternately arranged and is formed, and has gap between adjacent double cambered surface piling bars and bored concrete pile；Double cambered surface piling bars are upper
State double cambered surface piling bars described in any one technical solution.Preferably, the gap between adjacent double cambered surface piling bars and bored concrete pile
For 10-20mm.
The gap between adjacent two bored concrete piles can be made to lie substantially in closed state using double cambered surface piling bars, to avoid
In the stake holes for bored concrete pile of constructing, the drill bit of stake machine touches double cambered surface piling bars, adjacent double cambered surface piling bars and bored concrete pile it
Between there are a small gaps, in the casting process of bored concrete pile, the cement mortar in bored concrete pile can be penetrated into around stake holes
It in the soil body, and is bonded on double cambered surface piling bars of short distance, completes the connection between double cambered surface piling bars and bored concrete pile, make double cambered surfaces
Will not have between piling bar and bored concrete pile and region is formed by by plain soil, ensure that water retaining function.
Gap between double cambered surface piling bars and bored concrete pile is excessive, and the cement mortar oozed out out of bored concrete pile can not be by the gap
Completely enclosed, water blocking performance is bad, and gap is too small, and stake machine is easy to encounter double cambered surface piling bars in drilling, may be to stake machine
Drill bit damages.Gap between double cambered surface piling bars and bored concrete pile is controlled between 10-20mm, is smoothly bored in guarantee stake machine
While hole, additionally it is possible to guarantee that the cement mortar oozed out during filling concrete is tively firm bonded on the edge of a wing.
Further, the bored concrete pile is cast-in-situ bored pile, the center of arc of the lateral surface on the edge of a wing of double cambered surface piling bars and filling
Infuse the center overlapping of stake.Above-mentioned design can make between the lateral surface on the edge of a wing and the lateral surface of bored concrete pile have more uniformly away from
From being easily formed stable connection structure.
A further object of the application is to provide a kind of construction method of above-mentioned underground support structure, and this method includes as follows
Step:
(1) by the double cambered surface piling bars of setting position sinking；
(2) it constructs between adjacent double cambered surface piling bars bored concrete pile, forms supporting construction.
When sinking double cambered surface piling bars, it is to be ensured that its verticality needs preferably to adopt using leading truck thus within 1%
With high-precision leading truck, and use hydraulic vibration pile sinking.
In the construction method, using construct after double cambered surface piling bars of first constructing bored concrete pile the step of, double cambered surfaces of constructing first
After piling bar, vibrate in work progress in the filling concrete of subsequent bored concrete pile, the cement mortar being poured into stake holes has portion
Point cement mortar penetrates into the soil body around stake holes, this part of cement mortar will receive double arcs in the diffusion process of the soil body
The barrier on the edge of a wing of face piling bar, over time, the cement oozed out out of stake holes will have major part and not be arranged in filling
It infuses between stake and the edge of a wing, forms the structure of a soil cement, when especially the radian when the edge of a wing is larger, this is similar to soil cement
Structure makes the underground support structure be provided with stronger water-retaining capacity.
Further, to reduce construction cost, after underground structure completes construction, double cambered surface piling bars are pulled out, to double cambered surface steel
Stake is recycled and reused, or in other constructions.When needing to recycle double cambered surface piling bars, in double cambered surfaces of sinking
When piling bar, the external coating anti-friction agent in double cambered surface piling bars is needed, in order to the recycling of double cambered surface piling bars.
Detailed description of the invention:
Fig. 1 is the structure diagram of double cambered surface piling bar one embodiment.
Fig. 2 is the structure diagram of double cambered surface second embodiment of piling bar.
Fig. 3 is the structure diagram of double cambered surface piling bar third embodiments.
Fig. 4 is the structure diagram of one embodiment of underground support structure.
Specific embodiment:
Embodiment 1:
Refering to fig. 1, a kind of double cambered surface piling bars 10 a comprising web 11；A pair of of edge of a wing, for convenience of describing, by a pair
The edge of a wing is referred to as first edge of a wing 12 and second edge of a wing 13, which is arranged in the opposite two sides of web 11.Web 11
For steel plate in long strip, first edge of a wing 12 and second edge of a wing 13 is respectively set in the two sides of 11 width direction of web.
The edge of a wing has lateral surface that is recessed towards web direction and being in arc-shaped.The wherein lateral surface 122 on first edge of a wing 12
It is recessed towards 11 direction of web and be in arc-shaped.The lateral surface 132 on second edge of a wing 13 is recessed towards 11 direction of web and is in circular arc
Shape.
In the present embodiment, the central angle alpha of the lateral surface 122 on first edge of a wing 12 is 60 °, in Fig. 1, to indicate clear,
The center of circle 121 of the lateral surface 122 on first edge of a wing 12 is indicated using a small circle.The lateral surface 132 on second edge of a wing 13
Central angle β is also 60 °, and in Fig. 1, to indicate clear, the center of circle 131 of the lateral surface 132 on second edge of a wing 13 equally uses one
Small circle indicates.It is appreciated that in other embodiments, central angle alpha and central angle β can also for 30 °, 40 °, 100 ° or
120 °, naturally it is also possible to for other random angles between 30 ° -120 °.
In the present embodiment, the radius R12 of the lateral surface 122 on first edge of a wing 12 and the lateral surface 132 on second edge of a wing 13
Radius R13 is identical.
The edge of a wing is made of arc panel, is specifically rolled using steel plate, naturally it is also possible to be cut using round steel pipe.
Web 11 is connected to the middle part of the medial surface on the edge of a wing.That is the two sides of web 11 are connected to first edge of a wing 12
Medial surface 123 and the medial surface 133 on second edge of a wing 13.The cross section of double cambered surface piling bars 10 is in relative to a symmetry axis 111
Symmetrical axisymmetric shape, the symmetry axis 111 by the lateral surface on first edge of a wing center of arc 121 and second edge of a wing it is outer
The center of arc 131 of side.
Embodiment 2
It is improvement on that basis of example 1 in the present embodiment, referring to Fig. 2, double cambered surface piling bars 40 in the present embodiment
It is to be additionally arranged one block of web with the difference of embodiment 1, is provided with two blocks of parallel webs 41,44 in the present embodiment, this two pieces
Web is connected on the medial surface 423 on first edge of a wing 42 and the medial surface 433 on second edge of a wing 43, the cross of double cambered surface piling bars 40
Section is in relative to the symmetrical axisymmetric shape of a symmetry axis 112, which passes through the circle of the lateral surface on first edge of a wing
The center of arc 431 of the lateral surface at arc center 421 and second edge of a wing.
Two blocks of webs 41,44 are located substantially at the intermediate region on first edge of a wing 42 and second edge of a wing 43.
Embodiment 3
It is improvement on that basis of example 1 in the present embodiment, referring to Fig. 3, double cambered surface piling bars 50 in the present embodiment
It is to be additionally arranged two blocks of webs with the difference of embodiment 1, three blocks of parallel webs 51,54,55 is provided in the present embodiment, this three
Block web is connected on the medial surface 523 on first edge of a wing 52 and the medial surface 533 on second edge of a wing 53, the cross of double cambered surface piling bars
Section is in relative to the symmetrical axisymmetric shape of a symmetry axis 113, and the symmetry axis 113 is by first edge of a wing and second edge of a wing
The center of arc of lateral surface.
Web 51 is located at the centre of the centre on first edge of a wing 52 and second edge of a wing 53.Web 54,55 is symmetrically located at abdomen
The two sides of plate 51, and it is connected to the edge on two edges of a wing.It is in right relative to a symmetry axis 113 for making the cross section of double cambered surface piling bars 50
The axisymmetric shape of title, center of arc 521 and second edge of a wing 53 of the symmetry axis 113 by the lateral surface on first edge of a wing 52
The center of arc 531 of lateral surface.
Above-mentioned 3 embodiments are respectively provided with the web of 1,2,3 piece of different number, naturally it is also possible to other quantity be arranged
Web, setting muti-piece web are on the one hand to enhance water blocking effect, are on the other hand to improve double cambered surface piling bars itself
Intensity avoids that biggish deformation occurs under the action of external pressure and reduces a grade water effect.
Embodiment 4
Referring to Fig. 4, a kind of underground support structure, the underground support structure is specifically by double cambered surface piling bars in embodiment 1
It is alternately arranged and is formed with bored concrete pile, there is gap between adjacent double cambered surface piling bars and bored concrete pile.It is illustratively shown in figure
Three double cambered surface piling bars are successively known as by order of placement for convenience of describing by three double cambered surface piling bars and three bored concrete piles
101, second pairs of cambered surface piling bars 102 of a pair of cambered surface piling bar and the double cambered surface piling bars 103 of third.According to same sequence, three are filled
It infuses stake and is successively known as the first bored concrete pile 31, the second bored concrete pile 32 and third bored concrete pile 33.
By order of placement, the order of placement of three double cambered surface piling bars and three bored concrete piles is first pair of cambered surface piling bar 101, the
The one cambered surface piling bar 102 of bored concrete pile 31, second pairs and the double cambered surface piling bars 103 of the second bored concrete pile 32, third and third bored concrete pile 33.
Gap between adjacent double cambered surface piling bars and bored concrete pile is 10mm, it is possible to understand that in other embodiments, adjacent
Double cambered surface piling bars and bored concrete pile between gap can arbitrarily be selected between 10-20mm.
In the present embodiment, bored concrete pile is cast-in-situ bored pile, the center of arc of the lateral surface on the edge of a wing of double cambered surface piling bars with
The center of bored concrete pile is overlapped.Please continue to refer to Fig. 2, with the first bored concrete pile 31, the second bored concrete pile 32 and second pair of cambered surface piling bar 102
For illustrate positional relationship between bored concrete pile and double cambered surface piling bars, the first bored concrete pile 31 and the second bored concrete pile 32 are located at second pair
The two sides of cambered surface piling bar 102.The outside at the center 311 of the first bored concrete pile 31 and first edge of a wing 16 of second pair of cambered surface piling bar 102
The center of arc 161 in face 162 is overlapped, and the radius R31 of the first bored concrete pile 31 is compared with the circular arc half of the lateral surface 162 on first edge of a wing 16
The small 10mm of diameter R21.The lateral surface 172 at the center 321 of the second bored concrete pile 32 and second edge of a wing 17 of second pair of cambered surface piling bar 102
Center of arc 171 is overlapped, and the radius R32 of the second bored concrete pile 32 is small compared with the arc radius R22 of the lateral surface 172 on second edge of a wing 17
10mm。
Clear to show, the center 321 of the center 311 of the first bored concrete pile 31 and the second bored concrete pile 32 is all made of one small
Circle indicates.
In the present embodiment, the equal length of three double cambered surface piling bars and three bored concrete piles.It is understood that in other implementations
In example, according to the depth requirements of water-stop curtain, the stake bottom of double cambered surface piling bars can be higher or lower than the stake bottom of bored concrete pile.
Embodiment 5
The present embodiment is that the construction method built to the underground support structure in embodiment 4 is illustrated.Continuing with
Refering to Fig. 4, specific construction procedure are as follows:
(1) high-precision leading truck is used, and uses hydraulic vibration, by setting position sinking pair cambered surface piling bars 101,102,103.
The degree control of double cambered surface piling bars is within 1%.Before pile sinking, in the external coating anti-friction agent of double cambered surface piling bars.
(2) the construction bored concrete pile 31,32,33 between adjacent double cambered surface piling bars.When constructing bored concrete pile, excavation stake first
Then steel reinforcement cage is placed in hole in stake holes, be finally poured concrete and vibrate, in the casting process of vibrating of concrete, portion
Point cement mortar can ooze out stake holes, and continue under the pressure of subsequent cement mortar to external diffusion, and touch double cambered surface piling bars
The edge of a wing medial surface and condensation, double cambered surface piling bars are bonded as one with bored concrete pile.
After the construction for completing underground support structure, excavation pit carries out the construction of underground structure and completion, ties in underground
After the completion of the construction of structure, double cambered surface piling bars are pulled out, are recycled and reused.
When not needing to recycle double cambered surface piling bars, then without brushing anti-friction agent before pile sinking.
Claims (10)
1. pair cambered surface piling bar, which is characterized in that including a pair of of edge of a wing, a pair of edge of a wing interval setting；And at least one block of web,
Web is arranged between a pair of edge of a wing and is connected on a pair of edge of a wing；Any edge of a wing all has an outside for deviating from web
Face, the lateral surface is recessed towards web direction and is in arc-shaped.
2. double cambered surface piling bars according to claim 1, which is characterized in that the central angle of the lateral surface on the edge of a wing is 30 °
-120°。
3. double cambered surface piling bars according to claim 1, which is characterized in that the edge of a wing is arc panel.
4. double cambered surface piling bars according to claim 1, which is characterized in that the cross section of double cambered surface piling bars is in relative to one
Symmetrical axisymmetric axisymmetric shape, the symmetry axis pass through the center of arc of the lateral surface on the pair of edge of a wing.
5. double cambered surface piling bars according to claim 1, which is characterized in that the arc radius phase of the lateral surface on a pair of of edge of a wing
Together.
6. underground support structure, which is characterized in that it is alternately arranged by double cambered surface piling bars and bored concrete pile and is formed, adjacent double cambered surfaces
There is gap between piling bar and bored concrete pile；Double cambered surface piling bars are the described in any item double cambered surface piling bars of claim 1-5.
7. underground support structure according to claim 6, which is characterized in that between adjacent double cambered surface piling bars and bored concrete pile
Gap be 10-20mm.
8. underground support structure according to claim 6, which is characterized in that the bored concrete pile is cast-in-situ bored pile, double arcs
The center of arc of the lateral surface on the edge of a wing of face piling bar and the center of bored concrete pile are Chong Die.
9. the construction method of any one of claim 6-8 underground support structure, which comprises the steps of:
(1) by the double cambered surface piling bars of setting position sinking；
(2) it constructs between adjacent double cambered surface piling bars bored concrete pile, forms supporting construction.
10. construction method according to claim 9, which is characterized in that after underground structure completes construction, pull out double cambered surfaces
Piling bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811009733.6A CN108951661B (en) | 2018-08-31 | 2018-08-31 | Double-arc-surface steel pile, underground supporting structure and construction method of underground supporting structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811009733.6A CN108951661B (en) | 2018-08-31 | 2018-08-31 | Double-arc-surface steel pile, underground supporting structure and construction method of underground supporting structure |
Publications (2)
| Publication Number | Publication Date |
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| CN108951661A true CN108951661A (en) | 2018-12-07 |
| CN108951661B CN108951661B (en) | 2020-09-01 |
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| JPH08311864A (en) * | 1995-05-22 | 1996-11-26 | Shimizu Corp | Earth retaining wall and construction method therefor |
| CN1235226A (en) * | 1999-04-30 | 1999-11-17 | 中国第一冶金建设公司技术开发公司 | Method for protecting support of foundation ditch by mud jacking for retaining and water inhibiting and apparatus for mud jacking |
| CN106988328A (en) * | 2017-05-22 | 2017-07-28 | 中铁局集团有限公司 | A kind of C c-types opening locked steel tube pilecofferdam and construction method |
| CN107059881A (en) * | 2017-04-12 | 2017-08-18 | 广东省基础工程集团有限公司 | The foundation pit supporting method that a kind of campshed is combined with steel sheet pile |
| CN107268636A (en) * | 2017-07-18 | 2017-10-20 | 江苏景源万河环境科技有限公司 | The diaphragm wall foundation ditch that the steel cylinder or steel sheet pile of a kind of seal groove and occlusion structure are constituted is with going along with sb. to guard him and construction method |
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2018
- 2018-08-31 CN CN201811009733.6A patent/CN108951661B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08311864A (en) * | 1995-05-22 | 1996-11-26 | Shimizu Corp | Earth retaining wall and construction method therefor |
| CN1235226A (en) * | 1999-04-30 | 1999-11-17 | 中国第一冶金建设公司技术开发公司 | Method for protecting support of foundation ditch by mud jacking for retaining and water inhibiting and apparatus for mud jacking |
| CN107059881A (en) * | 2017-04-12 | 2017-08-18 | 广东省基础工程集团有限公司 | The foundation pit supporting method that a kind of campshed is combined with steel sheet pile |
| CN106988328A (en) * | 2017-05-22 | 2017-07-28 | 中铁局集团有限公司 | A kind of C c-types opening locked steel tube pilecofferdam and construction method |
| CN107268636A (en) * | 2017-07-18 | 2017-10-20 | 江苏景源万河环境科技有限公司 | The diaphragm wall foundation ditch that the steel cylinder or steel sheet pile of a kind of seal groove and occlusion structure are constituted is with going along with sb. to guard him and construction method |
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