CN110468850A - A kind of oblique cement mixing method foundation pit supporting system and method for protecting support - Google Patents
A kind of oblique cement mixing method foundation pit supporting system and method for protecting support Download PDFInfo
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- CN110468850A CN110468850A CN201910809954.XA CN201910809954A CN110468850A CN 110468850 A CN110468850 A CN 110468850A CN 201910809954 A CN201910809954 A CN 201910809954A CN 110468850 A CN110468850 A CN 110468850A
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- 238000000034 method Methods 0.000 title claims abstract description 154
- 239000004568 cement Substances 0.000 title claims abstract description 141
- 230000005484 gravity Effects 0.000 claims abstract description 89
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 57
- 239000002689 soil Substances 0.000 claims abstract description 29
- 229910052742 iron Inorganic materials 0.000 claims abstract description 28
- 238000003756 stirring Methods 0.000 claims description 38
- 238000010276 construction Methods 0.000 claims description 29
- 238000007569 slipcasting Methods 0.000 claims description 26
- 238000005553 drilling Methods 0.000 claims description 25
- 238000013461 design Methods 0.000 claims description 8
- 238000006073 displacement reaction Methods 0.000 abstract description 8
- 238000005452 bending Methods 0.000 abstract description 5
- 238000010586 diagram Methods 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000009412 basement excavation Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/02—Foundation pits
- E02D17/04—Bordering surfacing or stiffening the sides of foundation pits
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
- E02D5/34—Concrete or concrete-like piles cast in position ; Apparatus for making same
- E02D5/46—Concrete or concrete-like piles cast in position ; Apparatus for making same making in situ by forcing bonding agents into gravel fillings or the soil
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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Bulkheads Adapted To Foundation Construction (AREA)
Abstract
The invention discloses a kind of oblique cement mixing method foundation pit supporting systems, including oblique gravity wall；The soil cement braced wall of oblique slotting fashioned iron or prefabricated pile；Double raked pile supporting；An oblique Double-row Piles Support always；Gravity and skewed horizontal load combine gravity wall.Vertical cement mixing method is changed to the cement mixing method of certain angle by oblique gravity wall on the basis of traditional gravity type wall；Oblique slotting fashioned iron (or prefabricated pile) braced wall is addition fashioned iron (or prefabricated pile) in oblique cement mixing method；Inclination Double-row Piles Support and always one oblique Double-row Piles Support are all that two campsheds are connected by crown beam；Gravity and skewed horizontal load combination gravity wall are to squeeze into support of the oblique cement mixing method as gravity wall in oblique gravity wall or conventional vertical gravity wall side.The present invention largely reduces displacement at pile top, reduces bending, reduces support engineering cost, and increase cutting depth reduces a possibility that overturning occurs for foundation pit simultaneously.
Description
Technical field
The present invention relates to the methods of pattern foundation pit supporting structure, more particularly to carry out pattern foundation pit supporting structure using oblique Soil-cement supporting
Method.
Background technique
Gravity wall, campshed braced wall are the widest pattern foundation pit supporting structure forms of current domestic application, and stake therein is perpendicular
Straight stake, carrying out the shortcomings that campshed supporting is primarily present using Vertical Pile is: first is that, the displacement at pile top of identical cutting depth is big, interior
Power is big, so that ground after stake is generated moderate finite deformation, jeopardizes ambient enviroment.Second is that being easy to cause slope protection pile when the intensity of stake is inadequate
It fractures and makes instability of foundation pit, if excavation of foundation pit depth is easy to that overturning occurs when larger, therefore supporting construction needs are bigger
Section and insertion depth.Therefore, research and develop it is a kind of be suitable for soft clay area ultra-deep, super foundation, while it is economical, quickly, energy conservation, peace
Full method for protecting support is the urgent need of existing market development.
Summary of the invention
For the above-mentioned prior art, the present invention proposes a kind of oblique cement mixing method foundation pit supporting system, and use is oblique
Soil-cement supporting (including oblique gravity wall method；Oblique slotting fashioned iron or prefabricated pile soil cement braced wall method；Double inclination
Stake method of support；An oblique Double-row Piles Support method always；Gravity and skewed horizontal load combine gravity wall method) pattern foundation pit supporting structure is carried out, it is applicable in
It is expected to reduce displacement at pile top again in carrying out pattern foundation pit supporting structure using campshed, increases cutting depth, reduce campshed overturning possibility
Or reduce campshed design strength to reduce the foundation pit supporting project of cost.
In order to solve the above-mentioned technical problem, a kind of oblique cement mixing method foundation pit supporting system proposed by the present invention, tool
There are the one or more of following several supporting construction:
1) oblique gravity type braced wall, including being stirred to inclined soil cement on the inside of foundation pit along the two rows that foundation pit edge is arranged
Stake is mixed, the stake bottom of two rows of cement mixing methods is respectively positioned on a bottom designed elevation；Between two rows of cement mixing methods, along perpendicular to
The direction of the two rows cement mixing method is equipped with several rows and tilts cement mixing method, so as to form the oblique heavy of grid type
Power formula wall；
2) oblique slotting fashioned iron soil cement braced wall, including a row is to oblique cement mixing method inclined on the inside of foundation pit, institute
The stake bottom for stating oblique cement mixing method is located at stake bottom designed elevation；Length direction along the oblique cement mixing method runs through
Inserted with fashioned iron；
3) oblique slotting prefabricated pile soil cement braced wall；Including a row to oblique cement mixing method inclined on the inside of foundation pit,
The stake bottom of the oblique cement mixing method is located at stake bottom designed elevation；Length direction along the oblique cement mixing method passes through
Wear inserted with prefabricated pile；
4) double raked pile braced wall, including the front-seat support pile and heel row support pile being arranged along foundation pit edge, before described
Row's support pile is to inclined oblique cement mixing method on the inside of foundation pit, and the heel row support pile is inclined oblique on the outside of foundation pit
To cement mixing method, the stake bottom of the front row support pile and heel row support pile is respectively positioned on a bottom designed elevation；The front-seat branch
Crown beam is connected at the top of fender pile and heel row support pile；
5) an oblique Double-row Piles Support wall always, including the front-seat support pile being arranged along foundation pit edge and the vertical supporting of heel row
Stake, the front row support pile is to inclined oblique cement mixing method on the inside of foundation pit, and the heel row perpendicular protecting piles are vertical
The stake bottom of the cement mixing method in direction, front-seat support pile and heel row perpendicular protecting piles is respectively positioned on a bottom designed elevation；Before described
Crown beam is connected at the top of row's support pile and heel row perpendicular protecting piles；
6) skewed horizontal load combines gravity wall, and the support including gravity wall and gravity wall has following two layout；
First is that the gravity wall is oblique gravity wall, it is oblique from being obliquely installed along foundation pit edge and to foundation pit inside
It is constituted to cement mixing method, the support of the gravity wall is from the outside of the foundation pit and to inclined oblique on the outside of foundation pit
Cement mixing method is constituted；
Second is that the gravity wall is vertical gravity formula wall, stirred by the soil cement for the vertical direction being arranged along foundation pit edge
Mix stake composition, the support of the gravity wall is from the inside of the foundation pit and to inclined oblique Soil-cement on the inside of foundation pit
Stake is constituted；The stake bottom of the cement mixing method of the vertical direction and the oblique cement mixing method is respectively positioned on a bottom design mark
It is high.
Further, oblique cement mixing method foundation pit supporting system of the invention, wherein the skewed horizontal load combination weight
It is perforative inserted with fashioned iron along its length in the oblique cement mixing method of the support as gravity wall in power formula wall
Or prefabricated pile.
Meanwhile the invention also provides the method for protecting support in above-mentioned foundation pit supporting system, comprising:
The method for carrying out pattern foundation pit supporting structure using oblique gravity type braced wall, step is: first along foundation pit edge and into foundation pit
Side is inclined by front row inclination cement-soil stirring pile construction to stake bottom designed elevation；It rolls again along foundation pit edge and into foundation pit
Oblique tilts heel row cement-soil stirring pile construction to stake bottom designed elevation；The edge between front two rows inclination cement mixing method
Tilt cement mixing methods perpendicular to the construct several rows of direction of front two rows raked pile, to form grid type gravity type
Wall.
The method for carrying out pattern foundation pit supporting structure using oblique slotting fashioned iron braced wall, step is: along foundation pit edge and on the inside of foundation pit
It is inclined that drilling, slip casting, stirring are completed to cement mixing method；Construction lifts by crane fashioned iron, by the type to stake bottom designed elevation at once
Steel is inserted into oblique cement mixing method；It repeats aforesaid operations and forms oblique slotting fashioned iron braced wall.
The method for carrying out pattern foundation pit supporting structure using oblique slotting prefabricated pile braced wall, step is: along foundation pit edge and into foundation pit
Side is inclined to complete drilling, slip casting, stirring to cement mixing method；It constructs to stake bottom designed elevation, lifts by crane prefabricated pile at once, and
The prefabricated pile is inserted into oblique cement mixing method；It repeats aforesaid operations and forms oblique slotting prefabricated pile braced wall.
The method for carrying out pattern foundation pit supporting structure using double raked pile, step is: rolling on the inside of foundation pit edge and into foundation pit
Oblique completes drilling, slip casting, stirring to front-seat cement mixing method；It constructs to stake bottom designed elevation；On the inside of the foundation pit edge and
It is inclined on the outside of to foundation pit that drilling, slip casting, stirring are completed to heel row cement mixing method；It constructs to stake bottom designed elevation；Preceding
Crown beam is arranged in the stake top of two rows of cement mixing methods afterwards, is linked into overall structure.
The method for carrying out pattern foundation pit supporting structure using always one oblique double-row pile, step is: on the inside of foundation pit edge and into foundation pit
Side is inclined to complete drilling, slip casting, stirring to front-seat cement mixing method；It constructs to stake bottom designed elevation；Along foundation pit edge
Side it is vertical drilling, slip casting, stirring are completed to heel row cement mixing method；It constructs to stake bottom designed elevation；In front two rows water
Crown beam is arranged in the stake top of soil mixing pile, is linked into overall structure.
The method for carrying out pattern foundation pit supporting structure using skewed horizontal load combination gravity wall, there are two types of situations:
First is that first completing drilling along foundation pit side and to inclined on the inside of foundation pit to oblique cement mixing method, slip casting, stirring
It mixes, constructs to stake bottom designed elevation, form oblique gravity wall；Again on the outside of the foundation pit and to inclined right on the outside of foundation pit
Oblique cement mixing method completes drilling, slip casting, stirring, the support constructed to stake bottom designed elevation as gravity wall.
Second is that vertical cement-soil stirring pile construction to stake bottom designed elevation is first formed vertical gravity formula along foundation pit edge
Wall；Drilling, slip casting, stirring are completed to oblique cement mixing method on the inside of the foundation pit and to inclined on the inside of foundation pit again, applied
Support of the work to stake bottom designed elevation as gravity wall.
The present invention replaces vertical campshed by the improvement to common campshed supporting, with inclination cement mixing method, according to
Calculating and site condition, allow the campshed of pattern foundation pit supporting structure to be tilted a certain angle.Such method overcomes vertical campshed supporting very
It is mostly insufficient.This method can largely reduce displacement at pile top, reduce bending, reduce project cost, increase and excavate
Depth and make occur overturning a possibility that reduction.Using inclination cement mixing method carry out pattern foundation pit supporting structure type according to
Difference needs, and oblique gravity wall can be respectively adopted；Oblique slotting fashioned iron (prefabricated pile) soil cement braced wall；Double raked pile branch
Shield；An oblique Double-row Piles Support always；Gravity and skewed horizontal load combine gravity wall.Compared with prior art, of the invention beneficial
Effect is:
(1) this method can largely reduce displacement at pile top in the identical situation of cutting depth, with making after stake
Face deformation greatly reduces, and avoids damaging ambient enviroment, while can reduce bending, drops pile body design strength
It is low, to reduce project cost, have a great economic significance；
(2) when stake is long and stake design strength is identical as common campshed, cutting depth can be made to increase, had preferable
Technological value；Due to excavation face tilt, foundation pit occur overturning a possibility that greatly reduce, for base pit engineering safety anticipate
Justice is very big.
Detailed description of the invention
Fig. 1 is the support form schematic diagram of oblique gravity type braced wall in the present invention；
Fig. 2 is the support form schematic diagram of oblique cement mixing method in the present invention；
Fig. 3 is the support form schematic diagram of oblique slotting fashioned iron (or prefabricated pile) soil cement braced wall in the present invention；
Fig. 4 is the support form schematic diagram of double raked pile braced wall in the present invention；
Fig. 5 is the support form schematic diagram of an oblique Double-row Piles Support wall always in the present invention；
Fig. 6-1 is the schematic diagram of the support form embodiment one of skewed horizontal load combination gravity wall in the present invention；
Fig. 6-2 is the schematic diagram of the support form embodiment two of skewed horizontal load combination gravity wall in the present invention.
In figure:
1- fashioned iron or prefabricated pile, 2- crown beam, the oblique cement mixing method of 3-, the front row 31- support pile, 32- heel row support pile,
4- heel row perpendicular protecting piles, the oblique gravity wall of 5-, 6- vertical gravity formula wall.
Specific embodiment
With reference to the accompanying drawing and specific embodiment the present invention is described further, but following embodiments are absolutely not to this hair
It is bright to have any restrictions.
Method of the invention carries out supporting to foundation pit in the case where place allows, using the campshed with constant slope.
When carrying out pattern foundation pit supporting structure with taper pile, the sphenoid after stake with tendency toward sliding is smaller than sphenoid of stake when vertical, the reason is that
Sphenoid after stake is because the gradient has lacked a part.Therefore, the soil body can substantially reduce the active force of stake, such displacement at pile top and stake
Power of experiencing can all reduce very much.For theoretically, the gradient of stake is bigger, and the stress and displacement at pile top of stake are smaller, thus it is more economical,
But the gradient of stake unconfined cannot increase, because due to the limitation of construction site stake may be made without enough spaces
Gradient is too big, and on the other hand, when the gradient of stake is big, foundation depth stake below is due to reaching foundation pit inner space hereinafter, can
The construction of pile foundation can be will affect.In addition the inclination of stake can make the long increase of stake, offset a part because pile strength reduces bring warp
Ji property, and increase support pile difficulty of construction.Therefore in actual application, the determination of gradient should be abundant for taper pile supporting
Consider the factor of various aspects.
The oblique cement mixing method foundation pit supporting system of the present invention, one or more with following several supporting construction:
1) oblique gravity type braced wall and its method for protecting support, as shown in Figure 1, oblique gravity type braced wall: including along foundation pit
For the two rows of edge setting to inclined cement mixing method on the inside of foundation pit, the stake bottom of two rows of cement mixing methods is respectively positioned on a bottom
Designed elevation；Several rows are equipped between two rows of cement mixing methods, along the direction perpendicular to two rows of cement mixing methods
Cement mixing method is tilted, so as to form the oblique gravity wall 5 of grid type.The step of its realization supporting, is: first along foundation pit
Edge and to inclined by front row inclination cement-soil stirring pile construction to stake bottom designed elevation on the inside of foundation pit；Again along foundation pit edge,
And heel row is tilted into cement-soil stirring pile construction to stake bottom designed elevation to foundation pit inside is inclined；Cement is tilted in front two rows
Cement mixing methods are tilted along direction several rows of construction perpendicular to front two rows raked pile between native mixing pile, to be formed
The oblique gravity wall 5 of grid type.
2) soil cement braced wall and its supporting side of the oblique slotting fashioned iron of oblique cement mixing method 3 or prefabricated pile
Method, as shown in Figures 2 and 3, the soil cement braced wall of the oblique slotting fashioned iron of oblique cement mixing method 3 or prefabricated pile: packet
A row is included to inclined oblique cement mixing method 3 on the inside of foundation pit, the stake bottom of the oblique cement mixing method 3 is located at stake bottom and sets
Count absolute altitude；It is perforative inserted with fashioned iron or prefabricated pile 1 along the length direction of the oblique cement mixing method 3.Realize supporting
The step of be: drilling, slip casting, stirring are completed to cement mixing method along foundation pit edge and to inclined on the inside of foundation pit；Construction is extremely
Stake bottom designed elevation, lifts by crane fashioned iron at once, the fashioned iron or prefabricated pile 1 is inserted into oblique cement mixing method 3；It repeats above-mentioned
Step forms oblique slotting fashioned iron braced wall.
3) double raked pile braced wall and its method for protecting support, as shown in figure 4, double raked pile braced wall: including along foundation pit
The front-seat support pile 31 and heel row support pile 32 of edge setting, the front row support pile 31 are to inclined oblique water on the inside of foundation pit
Soil mixing pile, the heel row support pile 32 are the inclined oblique cement mixing methods on the outside of foundation pit, the front row support pile
31 and the stake bottom of heel row support pile 32 be respectively positioned on a bottom designed elevation；The top of the front row support pile 31 and heel row support pile 32
It is connected with crown beam 2.The step of realizing supporting is: stirring on the inside of foundation pit edge and to foundation pit inside is inclined front-seat soil cement
It mixes stake and completes drilling, slip casting, stirring；Construction forms front-seat support pile 31 to stake bottom designed elevation；On the inside of the foundation pit edge and
It is inclined on the outside of to foundation pit that drilling, slip casting, stirring are completed to heel row cement mixing method；Construction is formed to stake bottom designed elevation
Heel row support pile 32；Crown beam 2 is set in the stake top of front two rows cement mixing method 31 and 32, is linked into overall structure.
4) an oblique Double-row Piles Support wall and its method for protecting support always, as shown in figure 5, an oblique Double-row Piles Support wall always: packet
Front-seat support pile 31 and heel row perpendicular protecting piles 4 along the setting of foundation pit edge are included, the front row support pile 31 is on the inside of foundation pit
Inclined oblique cement mixing method, the cement mixing method that the heel row perpendicular protecting piles 4 are vertically oriented, front-seat support pile
31 and the stake bottoms of heel row perpendicular protecting piles 4 be respectively positioned on a bottom designed elevation；The front row support pile 31 and heel row perpendicular protecting piles 4
Top be connected with crown beam 2.The step of its realization supporting, is: on the inside of foundation pit edge and inclined to front row to foundation pit inside
Cement mixing method completes drilling, slip casting, stirring；Construction forms front-seat support pile 31 to stake bottom designed elevation；Along foundation pit edge
Inner vertical completes drilling, slip casting, stirring to heel row cement mixing method；Construction forms heel row and hangs down to stake bottom designed elevation
Allotment fender pile 4；Crown beam 2 is set in the stake top of front two rows cement mixing method, is linked into overall structure.
5) skewed horizontal load combination gravity wall and its method for protecting support, skewed horizontal load combination gravity wall include gravity wall and
The support of gravity wall has following two layout；
As in Figure 6-1, the gravity wall is oblique gravity wall 5, from tilting along foundation pit edge and to foundation pit inside
The oblique cement mixing method being arranged is constituted, and the support of the gravity wall is from rolling on the outside of foundation pit and to outside foundation pit
Oblique oblique cement mixing method 3 is constituted.The step of its realization supporting, is: first along foundation pit side and inclined right to foundation pit inside
Oblique cement mixing method completes drilling, slip casting, stirring, constructs to stake bottom designed elevation, forms oblique gravity wall 5；Exist again
Drilling, slip casting, stirring are completed to oblique cement mixing method on the outside of the foundation pit and to inclined on the outside of foundation pit, constructed to stake
Support of the bottom designed elevation as gravity wall.
As in fig. 6-2, the gravity wall is vertical gravity formula wall 6, by the vertical direction that is arranged along foundation pit edge
Cement mixing method is constituted, and the support of the gravity wall is from the inside of the foundation pit and to inclined oblique water on the inside of foundation pit
Soil mixing pile 3 is constituted；The stake bottom of the cement mixing method of the vertical direction and the oblique cement mixing method is respectively positioned on
Stake bottom designed elevation.The step of its realization supporting, is: first designing vertical cement-soil stirring pile construction to stake bottom along foundation pit edge
Absolute altitude forms vertical gravity formula wall 6；Again on the inside of the foundation pit and to inclined to oblique cement mixing method 3 on the inside of foundation pit
Drilling, slip casting, stirring are completed, the support constructed to stake bottom designed elevation as gravity wall.
To sum up, oblique cement mixing method foundation pit supporting method of the invention: oblique gravity wall；Oblique slotting fashioned iron is (pre-
Stake processed) soil cement braced wall；Double raked pile supporting；An oblique Double-row Piles Support always；Gravity and skewed horizontal load combine gravity type
Wall.Gravity wall is improved on the basis of conventional vertical cement stirring pier gravity wall, by vertical cement mixing method
It is changed to the cement mixing method of certain angle (being 55 °~125 ° with horizontal sextant angle), soil cement not only can be improved in this way and stir
The stress performance of stake is mixed, the resistance to capsizing of gravity wall can also be improved；Oblique slotting fashioned iron (or prefabricated pile) braced wall be
Bending resistance and shear behavior that fashioned iron (or prefabricated pile) improves stake are added in cement mixing method, and pile body inclining is squeezed into than vertical
It is more reasonable to squeeze into stress；Inclination Double-row Piles Support and always one oblique Double-row Piles Support are all that two campsheds are connected by crown beam, all
Lateral soil pressure can preferably be resisted；Gravity and skewed horizontal load combination gravity wall are the close foundation pits in traditional gravity type wall
Support of the oblique cement mixing method as gravity wall is squeezed into side, improves the lateral resisting of gravity wall.
The present invention largely reduces displacement at pile top, reduces bending, reduces support engineering cost, increases
Cutting depth reduces a possibility that overturning occurs for foundation pit simultaneously.
Although above in conjunction with attached drawing, invention has been described, and the invention is not limited to above-mentioned specific implementations
Mode, the above mentioned embodiment is only schematical, rather than restrictive, and those skilled in the art are at this
Under the enlightenment of invention, without deviating from the spirit of the invention, many variations can also be made, these belong to of the invention
Within protection.
Claims (9)
1. a kind of oblique cement mixing method foundation pit supporting system, which is characterized in that one kind with following several supporting construction
Or it is a variety of:
1) oblique gravity type braced wall, it is two rows of to inclined Soil-cement on the inside of foundation pit including being arranged along foundation pit edge
Stake, the stake bottom of two rows of cement mixing methods is respectively positioned on a bottom designed elevation；Between two rows of cement mixing methods, along perpendicular to institute
The direction for stating two rows of cement mixing methods is equipped with several rows and tilts cement mixing method, so as to form the oblique gravity of grid type
Formula wall (5)；
2) oblique slotting fashioned iron soil cement braced wall, including a row is to inclined oblique cement mixing method (3) on the inside of foundation pit, it is described
The stake bottom of oblique cement mixing method (3) is located at stake bottom designed elevation；Along the length direction of the oblique cement mixing method (3)
It is perforative inserted with fashioned iron (1)；
3) oblique slotting prefabricated pile soil cement braced wall；Including a row to oblique cement mixing method (3) inclined on the inside of foundation pit, institute
The stake bottom for stating oblique cement mixing method (3) is located at stake bottom designed elevation；Along the length side of the oblique cement mixing method (3)
To perforative inserted with prefabricated pile (1)；
4) double raked pile braced wall, including the front-seat support pile (31) and heel row support pile (32) being arranged along foundation pit edge, institute
Stating front-seat support pile (31) is to inclined oblique cement mixing method on the inside of foundation pit, and the heel row support pile (32) is to foundation pit
The stake bottom of the inclined oblique cement mixing method in outside, the front row support pile (31) and heel row support pile (32) is respectively positioned on a bottom
Designed elevation；Crown beam (2) are connected at the top of the front row support pile (31) and heel row support pile (32)；
5) an oblique Double-row Piles Support wall always, including the front-seat support pile (31) being arranged along foundation pit edge and heel row perpendicular protecting piles
(4), the front-seat support pile (31) is to inclined oblique cement mixing method on the inside of foundation pit, the heel row perpendicular protecting piles
(4) the stake bottom of the cement mixing method being vertically oriented, front-seat support pile (31) and heel row perpendicular protecting piles (4) is respectively positioned on a bottom
Designed elevation；Crown beam (2) are connected at the top of the front row support pile (31) and heel row perpendicular protecting piles (4)；
6) skewed horizontal load combines gravity wall, and the support including gravity wall and gravity wall has following two layout；
First is that the gravity wall is oblique gravity wall (5), it is oblique from being obliquely installed along foundation pit edge and to foundation pit inside
It is constituted to cement mixing method, the support of the gravity wall is from the outside of the foundation pit and to inclined oblique on the outside of foundation pit
Cement mixing method (3) is constituted；
Second is that the gravity wall is vertical gravity formula wall (6), by the Soil-cement for the vertical direction being arranged along foundation pit edge
Stake is constituted, and the support of the gravity wall is from the inside of the foundation pit and to inclined oblique cement mixing method on the inside of foundation pit
It constitutes；The stake bottom of the cement mixing method of the vertical direction and the oblique cement mixing method is respectively positioned on a bottom design mark
It is high.
2. oblique cement mixing method foundation pit supporting system according to claim 1, which is characterized in that the skewed horizontal load group
Close gravity wall in, in the oblique cement mixing method of the support as gravity wall, it is perforative along its length inserted with
Fashioned iron or prefabricated pile.
3. a kind of method for carrying out pattern foundation pit supporting structure using oblique gravity type braced wall, which comprises the following steps:
1) it is first marked along foundation pit edge and to inclined design front row inclination cement-soil stirring pile construction to stake bottom on the inside of foundation pit
It is high；
2) it is marked again along foundation pit edge and to inclined design heel row inclination cement-soil stirring pile construction to stake bottom on the inside of foundation pit
It is high；
3) along several rows of direction construction perpendicular to front two rows raked pile between front two rows inclination cement mixing method
Cement mixing method is tilted, to form grid type gravity wall.
4. a kind of method for carrying out pattern foundation pit supporting structure using oblique slotting fashioned iron braced wall, which comprises the following steps:
1) drilling, slip casting, stirring are completed to cement mixing method along foundation pit edge and to foundation pit inside is inclined；
2) construction lifts by crane fashioned iron at once, which is inserted into oblique cement mixing method to stake bottom designed elevation；
3) it repeats step 1) and 2) forms oblique slotting fashioned iron braced wall.
5. a kind of method for carrying out pattern foundation pit supporting structure using oblique slotting prefabricated pile braced wall, which comprises the following steps:
1) drilling, slip casting, stirring are completed to cement mixing method along foundation pit edge and to foundation pit inside is inclined；
2) construction lifts by crane prefabricated pile to stake bottom designed elevation at once, and the prefabricated pile is inserted into oblique cement mixing method；
3) it repeats step 1) and 2) forms oblique slotting prefabricated pile braced wall.
6. a kind of method for carrying out pattern foundation pit supporting structure using double raked pile, which comprises the following steps:
1) drilling, slip casting, stirring are completed to front-seat cement mixing method on the inside of foundation pit edge and to foundation pit inside is inclined；
It constructs to stake bottom designed elevation；
2) drilling, slip casting, stirring are completed to heel row cement mixing method on the inside of the foundation pit edge and to inclined on the outside of foundation pit；
It constructs to stake bottom designed elevation；
3) crown beam is set in the stake top of front two rows cement mixing method, is linked into overall structure.
7. a kind of method for carrying out pattern foundation pit supporting structure using always one oblique double-row pile, which comprises the following steps:
1) drilling, slip casting, stirring are completed to front-seat cement mixing method on the inside of foundation pit edge and to foundation pit inside is inclined；
It constructs to stake bottom designed elevation；
2) drilling, slip casting, stirring are completed to heel row cement mixing method along foundation pit edge inner vertical；It designs at construction to stake bottom
Absolute altitude；
3) crown beam is set in the stake top of front two rows cement mixing method, is linked into overall structure.
8. a kind of method for carrying out pattern foundation pit supporting structure using skewed horizontal load combination gravity wall, which is characterized in that first along foundation pit side and
Inclined on the inside of to foundation pit to complete drilling, slip casting, stirring to oblique cement mixing method, construction to stake bottom designed elevation is formed
Oblique gravity wall (5)；Again oblique cement mixing method is completed to bore on the outside of the foundation pit and to inclined on the outside of foundation pit
Hole, slip casting, stirring, the support constructed to stake bottom designed elevation as gravity wall.
9. a kind of method for carrying out pattern foundation pit supporting structure using skewed horizontal load combination gravity wall, which is characterized in that first along foundation pit edge
By vertical cement-soil stirring pile construction to stake bottom designed elevation, formed vertical gravity formula wall (6)；Again on the inside of the foundation pit and
Inclined on the inside of to foundation pit to complete drilling, slip casting, stirring to oblique cement mixing method, construction to stake bottom designed elevation is as weight
The support of power formula wall.
Priority Applications (1)
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| CN111119199A (en) * | 2020-01-16 | 2020-05-08 | 上海市政工程设计研究总院（集团）有限公司 | A-shaped double-row pile foundation pit supporting structure and construction method thereof |
| CN111287193A (en) * | 2020-02-19 | 2020-06-16 | 天津大学 | Foundation pit supporting structure utilizing steel sheet piles and concrete precast piles and supporting method thereof |
| CN111501774A (en) * | 2020-04-13 | 2020-08-07 | 中建三局集团有限公司 | Supporting system for front row inclined double-row piles and construction method thereof |
| CN111733878A (en) * | 2020-07-09 | 2020-10-02 | 济南城建集团有限公司 | Full-prefabricated assembled superposed comprehensive pipe gallery supporting construction structure and process |
| CN112095615A (en) * | 2020-09-18 | 2020-12-18 | 中国建筑第八工程局有限公司 | Supporting structure without inner support for deep foundation pit in soft soil area and construction method thereof |
| CN113863275A (en) * | 2021-10-20 | 2021-12-31 | 中铁第四勘察设计院集团有限公司 | Method for reinforcing foundation under existing viaduct |
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| CN113863275B (en) * | 2021-10-20 | 2022-11-11 | 中铁第四勘察设计院集团有限公司 | Method for reinforcing foundation under existing viaduct |
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