CN110453697A - A kind of anti-slide pile structure and its construction method with multizone united drainage function - Google Patents
A kind of anti-slide pile structure and its construction method with multizone united drainage function Download PDFInfo
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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
- E02D17/20—Securing of slopes or inclines
- E02D17/207—Securing of slopes or inclines with means incorporating sheet piles or piles
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Abstract
The invention discloses a kind of anti-slide pile structures and its construction method with multizone united drainage function.The friction pile includes that lower part stake bottom structure, top pile body structure and steel reinforcement cage are whole；Lower part stake bottom structure and top pile body structure are integrally connected as by steel reinforcement cage by entirety using casting method；Steel reinforcement cage integrally includes inner circular steel reinforcement cage and external square steel reinforcement cage from the inside to the outside；Inner circular steel reinforcement cage and external square steel reinforcement cage are connected as steel reinforcement cage entirety by connection reinforcing bar；The top pile body structure includes upper cross shape stake core, the rectangular pile lining in top, inclination gully-hole and right angle fan water space；The lower part stake bottom structure includes lower part barrette bottom and drainage hole.This anti-slide pile structure is simple, prefabricated can also have obviously effect to the bending resistance shearing resistance and drainage performance for effectively improving bevel edge slope, the security and stability for enhancing side slope with cast in situs.
Description
Technical field
The invention belongs to hazards control technical field, specifically a kind of antiskid with multizone united drainage function
Pilework and its construction method, especially for rainfall frequently and landslide disaster hotspot, be suitable for slope project and landslide
Harnessing project.
Background technique
Landslide is a kind of interior serious geological disaster of harm of global range, and the water such as rainfall, ice dissolution and reservoir water level fluctuation
Power effect is one of induced landslide disaster external factor the most main.With increased, the landslide ground of Human dried bloodstains
Matter disaster also becomes increasingly to take place frequently, caused by lose it is also increasing.In prevention and treatment landslide engineering, friction pile is landslide control
One of most common engineering measure.Friction pile is exactly driven into landslide by the main function of friction pile, whereby in slip mass
Inner layer stablizes it.Friction pile enters among the stabilized zone of slip mass, can effectively hinder the mobilization force of slip mass, significantly
Promote the stability of slip mass.When meeting with landslide, gliding mass meeting slide downward, at this moment if possessing antiskid inside it
Stake, it will be able to effectively prevent the appearance on landslide, it can be seen that the importance of friction pile.
Wherein, rectangular friction pile is because of its simple structure, easy for construction, good integrity, bearing capacity height, shock resistance
By force, work progress breakage rate is low, bending resistance with higher and the advantages that shear behavior, is chiefly used in the Practical Project of preventing land slide
In.Although the draining friction pile that presently, there are more to improve for drainage effect, that there are construction procedures is cumbersome for they,
Globality is poor, drainage performance is poor or it is functional limited the defects of.The document of application number 201811332042.X discloses one kind
Expansive soil slope takes spring to connect with the adaptive draining friction pile of deformation and construction method, stretch section, and globality is poor, resists
Curved and shear resistance reduces.In addition, circle pile bearing capacity is smaller, and impact resistance is low relative to square pile；And it is arranged using traditional siphon
Water technology only realizes slope drainage, acts on relatively single.
Summary of the invention
In view of the deficiencies of the prior art, the technical issues of present invention intends to solve is to provide a kind of with multizone joint row
The anti-slide pile structure and its construction method of water function.
The technical solution that the present invention solves the friction pile technical problem is to provide a kind of with multizone united drainage function
The anti-slide pile structure of energy, the friction pile include that lower part stake bottom structure, top pile body structure and steel reinforcement cage are whole；It is characterized in that adopting
Lower part stake bottom structure and top pile body structure are integrally connected as by entirety by steel reinforcement cage with casting method；
The steel reinforcement cage integrally includes inner circular steel reinforcement cage and external square steel reinforcement cage from the inside to the outside；By connecting steel
Inner circular steel reinforcement cage and external square steel reinforcement cage are connected as steel reinforcement cage entirety by muscle；
The top pile body structure includes upper cross shape stake core, the rectangular pile lining in top, inclination gully-hole and right angle fan
Water space；The lower part stake bottom structure includes lower part barrette bottom and drainage hole；
The rectangular pile lining of the upper cross shape stake core and top is by pouring to form entirety；Upper cross shape stake core inner tool
There is the top of inner circular steel reinforcement cage；Top barrette pars intramuralis has the top of external square steel reinforcement cage；Upper cross shape stake
Right angle fan water space is formed between the rectangular pile lining of core and top；Rubble is filled in the right angle fan water space；On
The inclination gully-hole of several perforations is offered in the rectangular pile lining in portion；The one end and right angle fan water space for tilting gully-hole connect
It is logical；Gravel is filled in inclination gully-hole；
There is the lower part of steel reinforcement cage entirety inside lower part barrette bottom；Lower part offers several perforations in barrette bottom
Drainage hole；It is equipped with permeable bed course at the top of one end of drainage hole, and is connected to right angle fan water space.
The technical solution that the present invention solves the construction method technical problem is to provide a kind of with multizone united drainage
The construction method of the anti-slide pile structure of function, it is characterised in that the construction method the following steps are included:
1) depth of quantity, size and the installation site and stake holes that determine friction pile is analyzed；
2) external square steel reinforcement cage and inner circular steel reinforcement cage are made；Inner circular steel reinforcement cage is packed into external square steel again
Welding forms steel reinforcement cage entirety in muscle cage；
3) according to the prefabricated rectangular pile body exterior sheathing of pile body cross dimensions；According to the shape and size of right angle fan water space
Make water space template；
4) it excavates inside stake holes to basement rock, and guarantees that stake holes cross dimensions is greater than friction pile cross dimensions；
5) steel reinforcement cage for obtaining step 2) is integrally put into the stake holes excavated, and then covers rectangular pile body exterior sheathing
The outside of steel reinforcement cage entirety is poured into concrete in rectangular pile body exterior sheathing until reaching the height h at lower part barrette bottom and pre-
Stay drainage hole；Stake bottom structure in lower part is obtained after concrete setting；
6) water space template is installed, then pours into concrete；Water space template and barrette are removed after concrete setting
Body exterior sheathing forms top pile body structure, and reserved inclination gully-hole；
7) it is laid with permeable bed course at the top of drainage hole, then successively fills fine sand, medium coarse sand and gravel from the bottom to top
It is fills up in inclination gully-hole into right angle fan water space, and by gravel；
8) space between antiskid stake body and stake holes is backfilled, is laid with clay in antiskid stake top after compacting.
A kind of construction method of the prefabricated anti-slide pile structure with multizone united drainage function, it is characterised in that the construction
Method the following steps are included:
1) depth of quantity, size and the installation site and stake holes that determine friction pile is analyzed；
2) it excavates inside stake holes to basement rock, and guarantees that stake holes cross dimensions is greater than friction pile cross dimensions；
3) prefabricated friction pile: according to the prefabricated friction pile of design requirement；
4) prefabricated antiskid pile driving construction: lifting by crane prefabricated friction pile, is directed at stake holes, adjusts the verticality of prefabricated friction pile, then
Prefabricated friction pile is put into stake holes to designed elevation；
5) it is laid with permeable bed course at the top of drainage hole, then successively fills fine sand, medium coarse sand and gravel from the bottom to top
It is fills up in inclination gully-hole into right angle fan water space, and by gravel；
6) space between antiskid stake body and stake holes is backfilled, is laid with clay in antiskid stake top after compacting.
Compared with prior art, the beneficial effects of the invention are that:
1, the bending resistance with higher of this friction pile and shear behavior: using one-piece casting method by steel reinforcement cage integrally by pile body
Various pieces connect to form entirety, improve the globality of friction pile, ensure that pile body bending resistance with higher and shear behavior.
2, this friction pile has an excellent drain function: the siphon drainage technology of abandoning tradition and the effect that generates is relatively single
One disadvantage.Duct of catchmenting is tilted designed by this friction pile can allow the water in slopes more easily to flow into stake, set
The right angle fan water space set has the characteristics that water-collecting capacity is strong, and set water draining pass extend into energy reality in basement rock
When water is discharged.By inclination gully-hole flow into right angle fan water space water by drainage hole be discharged, inclination gully-hole, directly
Angle sector water space and drainage hole constitute complete drainage system, improve the drainage efficiency of friction pile.
3, use pile body section configuration for rectangular pilework (i.e. square pile), theoretical calculation shearing resistance is same tubular pole
2~3 times, the shear resistance of friction pile is greatly improved, while the bearing capacity of pile of square pile is equivalent to the thick-walled pipe of 500 outer diameters
Stake, improves the bearing capacity of friction pile；Furthermore its work progress breakage rate is low, and shock resistance is strong, and easy exploiting goes out non-solder
Fast connector, convenient and quick construction can avoid occurring welding pile crown cracking phenomena in phreatic high.
4, this anti-slide pile structure is simple, can be with cast in situs can also prefabricated (steel reinforcement cage be put into antiskid in advance by prefabricated finger
It in pile die, pours to form this anti-slide pile structure, is directly used in construction).Construction method is mature, and process is simple, and construction quality is easy
Control.
Detailed description of the invention
Fig. 1 is friction pile entirety perspective cross section operation schematic diagram of the invention；
Fig. 2 is the sectional schematic diagram of top pile body structure of the invention；
Fig. 3 is the sectional schematic diagram of stake bottom structure in lower part of the invention.
In figure: 1, clay；2, the rectangular pile lining in top；3, gully-hole is tilted；4, external square steel reinforcement cage；5, inner circular steel
Muscle cage；6, reinforcing bar is connected；7, upper cross shape stake core；8, lower part barrette bottom；9, basement rock；10, gravel；11, medium coarse sand；12,
Fine sand；13, permeable bed course；14, drainage hole；15, right angle fan water space；16, sliding surface.
Specific embodiment
Below with reference to examples and drawings, the invention will be further described.Specific embodiment is only used for further specifically
The bright present invention does not limit the protection scope of the claim of this application.
The present invention provides a kind of anti-slide pile structure (the abbreviation friction pile, referring to figure with multizone united drainage function
1-3), which includes that lower part stake bottom structure, top pile body structure and steel reinforcement cage are whole；It is characterized in that using one-piece casting
Lower part stake bottom structure and top pile body structure are integrally connected as an entirety by steel reinforcement cage by method；
The steel reinforcement cage integrally includes inner circular steel reinforcement cage 5 and external square steel reinforcement cage 4 from the inside to the outside；Pass through connection
Inner circular steel reinforcement cage 5 and external square steel reinforcement cage 4 are welded to connect as steel reinforcement cage entirety by reinforcing bar 6；
The top pile body structure includes upper cross shape stake core 7, the rectangular pile lining 2 in top, inclination gully-hole 3 and right angle fan
Shape water space 15；The lower part stake bottom structure includes lower part barrette bottom 8 and drainage hole 14；
The rectangular pile lining 2 of the upper cross shape stake core 7 and top forms entirety by pouring connection；Upper cross shape stake core
7 inside have the top of inner circular steel reinforcement cage 5；With the top of external square steel reinforcement cage 4 inside the rectangular pile lining 2 in top；On
Right angle fan water space 15 is formed between the rectangular pile lining 2 of portion's cross stake core 7 and top；The right angle fan water space 15
In be filled with rubble and be full of；The inclination gully-hole 3 of several perforations is offered in the rectangular pile lining 2 in top, convenient for the water in slopes
It flows into right angle fan water space 15, and runs through the rectangular pile lining 2 in top；Tilt one end and the right angle fan water storage of gully-hole 3
Space 15 is connected to；Gravel 10 is filled in inclination gully-hole 3 and is full of, and other impurities flow into inclination gully-hole with water in order to prevent
In 3, effect of catchmenting is influenced；
The rubble according to the fine sand 12, medium coarse sand 11 and gravel 10 of ballast grain sizes by constituting；Right angle fan water space
Fine sand 12, medium coarse sand 11 and gravel 10 are successively filled in 15 from the bottom to top and is full of.
With the lower part of steel reinforcement cage entirety inside lower part barrette bottom 8；It is offered in lower part barrette bottom 8 several perpendicular
The drainage hole 14 directly penetrated through, vertical arrangement shortens flow path, and runs through lower part barrette bottom 8；At the top of one end of drainage hole 14
It is equipped with permeable bed course 13 (preventing fine sand 12 from entering in drainage hole 14), and is connected to right angle fan water space 15；Drainage hole
It is filled with gravel 10 in 14 and is full of；
Preferably, the height h at lower part barrette bottom 8 is 50~80cm；The thickness d of the rectangular pile lining 2 in top and breaking for pile body
Relationship between the length L of face isThe distance l of two neighboring right angle fan water space 15 and the section of pile body
Relationship between length L isThe radius r of inner circular steel reinforcement cage 5outWith right angle fan water space 15
Radius routIt is identical, and be with the relationship of the section length L of pile bodyThe drainage hole 14 can be circle
Or rectangular, circular radius rinSection length L relationship with pile body is
Lower part barrette bottom 8 passes through sliding surface 16 and is embedded in 9 certain depth of basement rock i.e. drainage hole 14 and extend into basement rock 9, and
Lower part barrette bottom 8 cannot be completely in 16 or less sliding surface.
Rectangular i.e. square.
Invention also provides a kind of construction methods of anti-slide pile structure with multizone united drainage function (referred to as
Construction method), it is characterised in that the construction method the following steps are included:
1) geologic prospect and indoor design: geologic prospect is carried out to landslide areas, grasps its formation lithology, slopes substance group
At information such as the positions of distribution situation and sliding surface 16, quantity, size and the installation site and stake holes for determining friction pile are analyzed
Depth；
2) precast reinforced cage: using welding and technology for binding processing and fabricating external square steel reinforcement cage 4 and inner circular reinforcing bar
Cage 5；Inner circular steel reinforcement cage 5 is fitted into external square steel reinforcement cage 4 again, steel reinforcement cage entirety is formed by the connection welding of reinforcing bar 6；
3) prefab-form: prefab-form includes rectangular pile body exterior sheathing and water space template；According to pile body cross dimensions
Prefabricated rectangular pile body exterior sheathing；Water space template is made according to the shape and size of right angle fan water space 15；
4) it excavates stake holes: according to design, excavating stake holes straight down from slope surface to 9 inside certain depth of basement rock, into
The processing of row retaining wall, and guarantee that stake holes cross dimensions is greater than friction pile cross dimensions；
5) lower part stake bottom structure construction: the steel reinforcement cage that step 2) is obtained integrally is put into the stake holes excavated, and then will
Rectangular pile body exterior sheathing covers in the outside of steel reinforcement cage entirety, concrete is poured into rectangular pile body exterior sheathing until reaching lower part side
The height h at shape stake bottom 8 and reserved drainage hole 14；Stake bottom structure in lower part is obtained after concrete setting；
6) top pile body structure construction: installation water space template, then pour into concrete；Water storage is removed after concrete setting
Space template and rectangular pile body exterior sheathing form top pile body structure, and reserved inclination gully-hole 3；
7) construction in later period: being fills up to gravel 10 in drainage hole 14 and be full of first, then spreads at the top of drainage hole 14
If permeable bed course 13, then according to requiring successively to fill fine sand 12, medium coarse sand 11 and gravel 10 from the bottom to top with ballast grain sizes
It into right angle fan water space 15 and is full of, and gravel 10 is fills up in inclination gully-hole 3 and is full of；
8) backfill and tamp: the space between backfill antiskid stake body and stake holes is laid in antiskid stake top after compacting and sticks
Soil 1；Clay layer with a thickness of 2~5cm, effect is to prevent from the water of slope surface from flowing backward to enter inside pile body.
Construction method using prefabricated anti-slide pile structure is:
1) geologic prospect and indoor design: geologic prospect is carried out to landslide areas, grasps its formation lithology, slopes substance group
At information such as the positions of distribution situation and sliding surface 16, quantity, size and the installation site and stake holes for determining friction pile are analyzed
Depth；
2) it excavates stake holes: according to design, excavating stake holes straight down from slope surface to 9 inside certain depth of basement rock, into
The processing of row retaining wall, and guarantee that stake holes cross dimensions is greater than friction pile cross dimensions；
3) prefabricated friction pile: according to the prefabricated friction pile of design requirement；
4) prefabricated antiskid pile driving construction: lifting by crane prefabricated friction pile, is directed at stake holes, adjusts the verticality of prefabricated friction pile, then
Prefabricated friction pile is slowly put into stake holes to designed elevation；
5) construction in later period: being fills up to gravel 10 in drainage hole 14 and be full of, is then laid at the top of drainage hole 14 saturating
Water subfill 13, then according to requiring successively to be fills up to fine sand 12, medium coarse sand 11 and gravel 10 directly from the bottom to top with ballast grain sizes
It in angle sector water space 15 and is full of, and gravel 10 is fills up in inclination gully-hole 3 and is full of；
6) backfill and tamp: the space between backfill antiskid stake body and stake holes is laid in antiskid stake top after compacting and sticks
Soil 1；Clay layer with a thickness of 2~5cm, effect is to prevent from the water of slope surface from flowing backward to enter inside pile body.
The sliding surface 16 includes sliding surface or slip band.
The present invention does not address place and is suitable for the prior art.
Claims (10)
1. a kind of anti-slide pile structure with multizone united drainage function, which includes lower part stake bottom structure, top stake
Body structure and steel reinforcement cage are whole；It is characterized in that using casting method by steel reinforcement cage integrally by lower part stake bottom structure and top pile body
Structure is connected as entirety；
The steel reinforcement cage integrally includes inner circular steel reinforcement cage and external square steel reinforcement cage from the inside to the outside；It will by connection reinforcing bar
Inner circular steel reinforcement cage and external square steel reinforcement cage are connected as steel reinforcement cage entirety；
The top pile body structure includes upper cross shape stake core, the rectangular pile lining in top, inclination gully-hole and right angle fan water storage
Space；The lower part stake bottom structure includes lower part barrette bottom and drainage hole；
The rectangular pile lining of the upper cross shape stake core and top is by pouring to form entirety；Upper cross shape stake core inner has interior
The top of portion's circle steel reinforcement cage；Top barrette pars intramuralis has the top of external square steel reinforcement cage；Upper cross shape stake core and
Right angle fan water space is formed between the rectangular pile lining in top；Rubble is filled in the right angle fan water space；Top side
The inclination gully-hole of several perforations is offered in shape pile lining；One end of inclination gully-hole is connected to right angle fan water space；Incline
Gravel is filled in oblique gully-hole；
There is the lower part of steel reinforcement cage entirety inside lower part barrette bottom；The row of several perforations is offered in the barrette bottom of lower part
Water hole；It is equipped with permeable bed course at the top of one end of drainage hole, and is connected to right angle fan water space.
2. the anti-slide pile structure according to claim 1 with multizone united drainage function, it is characterised in that drainage hole
It is vertically disposed in the barrette bottom of lower part, and runs through lower part barrette bottom；Gravel is filled in drainage hole.
3. the anti-slide pile structure according to claim 1 or 2 with multizone united drainage function, it is characterised in that inclination
Gravel is full of in gully-hole and drainage hole.
4. the anti-slide pile structure according to claim 1 with multizone united drainage function, it is characterised in that right angle fan
Rubble is full of in shape water space；The rubble is made of fine sand, medium coarse sand and gravel；In right angle fan water space by down toward
On be successively filled with fine sand, medium coarse sand and gravel and be full of.
5. the anti-slide pile structure according to claim 1 with multizone united drainage function, it is characterised in that under described
The height h at portion barrette bottom is 50~80cm.
6. the anti-slide pile structure according to claim 1 with multizone united drainage function, it is characterised in that top side
Relationship between the thickness d of shape pile lining and the section length L of pile body is
7. the anti-slide pile structure according to claim 1 with multizone united drainage function, it is characterised in that adjacent two
Relationship between the distance l of a right angle fan water space and the section length L of pile body isInner circular steel
The radius r of muscle cageoutWith the radius r of right angle fan water spaceoutIt is identical, and be with the relationship of the section length L of pile bodyThe drainage hole is round or rectangular, circular radius rinSection length L relationship with pile body is
8. a kind of construction method of the anti-slide pile structure with multizone united drainage function, it is characterised in that the construction method packet
Include following steps:
1) depth of quantity, size and the installation site and stake holes that determine friction pile is analyzed；
2) external square steel reinforcement cage and inner circular steel reinforcement cage are made；Inner circular steel reinforcement cage is packed into external square steel reinforcement cage again
Middle welding forms steel reinforcement cage entirety；
3) according to the prefabricated rectangular pile body exterior sheathing of pile body cross dimensions；It is made according to the shape and size of right angle fan water space
Water space template；
4) it excavates inside stake holes to basement rock, and guarantees that stake holes cross dimensions is greater than friction pile cross dimensions；
5) steel reinforcement cage for obtaining step 2) is integrally put into the stake holes excavated, and then covers rectangular pile body exterior sheathing in reinforcing bar
The outside of cage entirety is poured into concrete in rectangular pile body exterior sheathing until reaching the height h at lower part barrette bottom and reserved row
Water hole；Stake bottom structure in lower part is obtained after concrete setting；
6) water space template is installed, then pours into concrete；It is removed outside water space template and rectangular pile body after concrete setting
Template forms top pile body structure, and reserved inclination gully-hole；
7) it is laid with permeable bed course at the top of drainage hole, be then successively fills up to fine sand, medium coarse sand and gravel from the bottom to top straight
In the sector water space of angle, and gravel is fills up in inclination gully-hole；
8) space between antiskid stake body and stake holes is backfilled, is laid with clay in antiskid stake top after compacting.
9. a kind of construction method of the anti-slide pile structure with multizone united drainage function, it is characterised in that the construction method packet
Include following steps:
1) depth of quantity, size and the installation site and stake holes that determine friction pile is analyzed；
2) it excavates inside stake holes to basement rock, and guarantees that stake holes cross dimensions is greater than friction pile cross dimensions；
3) prefabricated friction pile: according to the prefabricated friction pile of design requirement；
4) prefabricated antiskid pile driving construction: lifting by crane prefabricated friction pile, is directed at stake holes, adjusts the verticality of prefabricated friction pile, then will be pre-
Friction pile processed is put into stake holes to designed elevation；
5) it is laid with permeable bed course at the top of drainage hole, be then successively fills up to fine sand, medium coarse sand and gravel from the bottom to top straight
In the sector water space of angle, and gravel is fills up in inclination gully-hole；
6) space between antiskid stake body and stake holes is backfilled, is laid with clay in antiskid stake top after compacting.
10. the construction method of the anti-slide pile structure with multizone united drainage function according to claim 8 or claim 9,
It is characterized in that being filled with gravel in drainage hole and be full of；Fine sand, medium coarse sand and gravel are full of in right angle fan water space；Inclination
Gravel is full of in gully-hole；Clay layer with a thickness of 2~5cm.
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| CN201910782855.7A CN110453697B (en) | 2019-08-23 | 2019-08-23 | Anti-slide pile structure with multi-region combined drainage function and construction method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111622240A (en) * | 2020-06-02 | 2020-09-04 | 四川大学 | Trapezoidal toe-added drainage slide-resistant pile and construction method thereof |
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| CN106759390A (en) * | 2016-11-14 | 2017-05-31 | 重庆大学 | A kind of rubble non-uniform pile composite construction and its construction method with draining and AsA -GSH cycle |
| CN110016922A (en) * | 2019-05-14 | 2019-07-16 | 河北工业大学 | A kind of novel integral draining anti-slide pile structure and its construction method |
| CN110080254A (en) * | 2019-05-14 | 2019-08-02 | 河北工业大学 | Draining friction pile-water guide culvert structure and construction method for oblique slope reinforcement |
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- 2019-08-23 CN CN201910782855.7A patent/CN110453697B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106759390A (en) * | 2016-11-14 | 2017-05-31 | 重庆大学 | A kind of rubble non-uniform pile composite construction and its construction method with draining and AsA -GSH cycle |
| CN110016922A (en) * | 2019-05-14 | 2019-07-16 | 河北工业大学 | A kind of novel integral draining anti-slide pile structure and its construction method |
| CN110080254A (en) * | 2019-05-14 | 2019-08-02 | 河北工业大学 | Draining friction pile-water guide culvert structure and construction method for oblique slope reinforcement |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111622240A (en) * | 2020-06-02 | 2020-09-04 | 四川大学 | Trapezoidal toe-added drainage slide-resistant pile and construction method thereof |
| CN111622240B (en) * | 2020-06-02 | 2021-12-07 | 四川大学 | Trapezoidal toe-added drainage slide-resistant pile and construction method thereof |
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| Publication number | Publication date |
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| CN110453697B (en) | 2020-11-10 |
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