阅读说明：本技术 一种内嵌桩柱的排水抗滑桩结构及其施工方法 (A kind of the draining anti-slide pile structure and its construction method of embedded pile ) 是由 黄达 罗世林 宋宜祥 裴向军 岑夺丰 于 2019-08-23 设计创作，主要内容包括：本发明公开了一种内嵌桩柱的排水抗滑桩结构及其施工方法。该抗滑桩包括下部桩底结构、上部桩身结构、圆形钢筋笼一、圆形钢筋笼二和圆形钢筋笼三；上部桩身结构包括上部圆环桩壁、上部圆形桩芯、上部圆形桩柱、倾斜集水孔和上部桩身剩余空间；下部桩底结构包括下部圆形桩底和排水孔。本抗滑桩将上部圆环桩壁、上部圆形桩芯、上部圆形桩柱相互连接并分别与下部圆形桩底连接形成整体,同时上部圆形桩柱之间以及上部圆形桩柱与上部圆环桩壁和上部圆形桩芯均相切,提高了抗滑桩的整体性,保证了排水性能的同时桩体具有较高的抗弯和抗剪性能,有效抵抗斜边坡变形,显著提高坡体稳定性,为水动力型滑坡灾害防治提供了一种有效的支挡结构。(The invention discloses a kind of draining anti-slide pile structure of embedded pile and its construction methods.The friction pile includes lower part stake bottom structure, top pile body structure, round steel reinforcement cage one, round steel reinforcement cage two and round steel reinforcement cage three；Top pile body structure includes top annulus pile lining, upper circular stake core, upper circular pile, inclination gully-hole and top pile body remaining space；Lower part stake bottom structure includes lower part circle stake bottom and drainage hole.Top annulus pile lining, upper circular stake core, upper circular pile are connected with each other and connect to form entirety with lower part circle stake bottom respectively by this friction pile, simultaneously between upper circular pile and upper circular pile and top annulus pile lining and upper circular stake core it is tangent, improve the globality of friction pile, pile body bending resistance with higher and shear behavior while ensure that drainage performance, it is effective against oblique slope deforming, slope texture is significantly improved, provides a kind of effective retaining structure for hydrodynamic force type landslide disaster prevention.)

1. a kind of draining anti-slide pile structure of embedded pile, it is characterised in that the friction pile includes lower part stake bottom structure, top stake Body structure, round steel reinforcement cage one, round steel reinforcement cage two and round steel reinforcement cage three；

The top pile body structure include top annulus pile lining, upper circular stake core, upper circular pile, inclination gully-hole and on Portion's pile body remaining space；The lower part stake bottom structure includes lower part circle stake bottom and drainage hole；

The upper circular stake core, upper circular pile and top annulus pile lining are in turn connected to form entirety by pouring；It is several Upper circular pile annular array is between top annulus pile lining and upper circular stake core；Upper circular stake core inner has circle The top of steel reinforcement cage three；There is the top of round steel reinforcement cage two inside upper circular pile；Top circular annular pile pars intramuralis has circle The top of shape steel reinforcement cage one；Between top annulus pile lining and upper circular pile and upper circular stake core and upper circular pile Between formed top pile body remaining space；Metaling is filled in the top pile body remaining space；It is opened in the annulus pile lining of top Inclination gully-hole equipped with several perforations；One end of inclination gully-hole is connected to top pile body remaining space；It tilts in gully-hole It is filled with metaling；

There is the lower part of round steel reinforcement cage one, round steel reinforcement cage two and round steel reinforcement cage three inside the lower part circle stake bottom；On Portion's circle stake core is connect by round steel reinforcement cage three with lower part circle stake bottom integral using casting method；Upper circular pile uses Casting method is connect by round steel reinforcement cage two with lower part circle stake bottom integral；Top annulus pile lining passes through circle using casting method Steel reinforcement cage one connect integral with lower part circle stake bottom；Lower part offers several drainage holes in circle stake bottom；One end of drainage hole Top is equipped with geomembrane, and is connected to top pile body remaining space.

2. the draining anti-slide pile structure of embedded pile according to claim 1, it is characterised in that drainage hole is vertically disposed to In the circle stake bottom of lower part, and run through lower part circle stake bottom；Metaling is filled in drainage hole.

3. the draining anti-slide pile structure of embedded pile according to claim 1 or 2, it is characterised in that top pile body is remaining empty Between, inclination gully-hole and drainage hole in be each filled with metaling.

4. the draining anti-slide pile structure of embedded pile according to claim 1, it is characterised in that the lower part circle stake bottom Height h be 50~80cm；Top annulus pile lining ring width d and the relationship of antiskid stake body radius r areOn described The radius r of portion's circle pile₁Relationship with antiskid stake body radius r isIt is described inclination gully-hole section be The circle of diameter 1.5cm~4cm.

5. the draining anti-slide pile structure of embedded pile according to claim 1, it is characterised in that the upper circular pile It is solid cylinder with upper circular stake core.

6. the draining anti-slide pile structure of embedded pile according to claim 1, it is characterised in that two neighboring upper circular Pile two two is tangent and upper circular pile and top annulus pile lining and upper circular stake core are tangent.

7. the draining anti-slide pile structure of embedded pile according to claim 1, it is characterised in that the lower part circle stake bottom Axis, the axis of top annulus pile lining and the axis collinear of upper circular stake core and vertical.

8. a kind of construction method of the draining anti-slide pile structure of embedded pile, it is characterised in that the construction method includes following step It is rapid:

1) depth of quantity, size and the installation site and stake holes that determine friction pile is analyzed；

2) precast reinforced cage: processing and fabricating circle steel reinforcement cage one, round steel reinforcement cage two and round steel reinforcement cage three；

3) according to the pre- round pile body exterior sheathing of pile body radius；It is made according to the shape and size of top pile body remaining space remaining Space template；According to the size prefabricated stake center template of upper circular stake core；

4) it excavates inside stake holes to basement rock, and guarantees that stake holes radius is greater than friction pile radius；

5) the precast reinforced cage for obtaining step 2) is put into the stake holes excavated, then by round pile body external mold sleeve-board in circle Concrete is poured into the height h in round pile body exterior sheathing until lower part circle stake bottom and reserves draining by the outside of steel reinforcement cage one Hole；Stake bottom structure in lower part is obtained after concrete setting；

6) by stake core model sleeve-board in the outside of the round steel reinforcement cage three of residual altitude, casting concrete；It is removed after concrete setting Stake core mold plate, forms upper circular stake core；

7) remaining space template is installed, then pours into concrete；Remaining space template and round pile body are removed after concrete setting Exterior sheathing forms top annulus pile lining and upper circular pile, and reserved inclination gully-hole；

8) it is laid with geomembrane at the top of drainage hole, then metaling is fills up in the pile body remaining space of top, and by rubble Material is fills up in inclination gully-hole；

9) 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 draining anti-slide pile structure of embedded pile, it is characterised in that the construction method includes following step It is rapid:

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 radius is greater than friction pile radius；

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 geomembrane at the top of drainage hole, then metaling is fills up in the pile body remaining space of top, and by rubble Material 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 draining anti-slide pile structure of embedded pile according to claim 8 or claim 9, it is characterised in that row It is filled with metaling in water hole and is full of；Metaling is each filled in top pile body remaining space and inclination gully-hole；Clay layer With a thickness of 2~5cm.

Technical field

The invention belongs to slopes retaining structure field, the draining anti-slide pile structure of specifically a kind of embedded pile and its apply Work method, suitable for the hydrodynamic force type reinforcing side slope technique by Hydrographic Factors such as library water and rainfalls.

Background technique

Landslide control is a complicated geotechnical engineering problems, at present landslide control engineering with main antiskid arrange It applies as friction pile.Friction pile is a kind of structures for passing through gliding mass and be embedded in anchoring at basement rock certain depth, and top of coming down pushes away Power passes to stable slider bed by friction pile, to achieve the purpose that Landslide.In landslide control engineering, friction pile Construction is usually formed the extremely low opposite core wall of one of permeability, so as to cause the natural drainage access denial on landslide, side slope Lower water level is raised, and slope treatment effect is difficult to reach expected.

Water is the extremely crucial external factor influenced in the factors that landslide generates.Compared with general side slope, water Power type landslide usually to be difficult by way of the table runoff of slope that slopes largely are discharged in water, and the overwhelming majority penetrates into slip mass Inside, and boundary seepage of water is stronger, overall underground water is more developed.In addition to this, some large landslide profile morphologies are complicated, With apparent hierarchy characteristic, the requirement to antiskid, drainage system is considerably beyond general side slope, for such landslide exhibition The research of water, antiskid performance of beginning to rehearse seems most important.

Summary of the invention

In view of the deficiencies of the prior art, the draining that the technical issues of present invention intends to solve is to provide a kind of embedded pile is anti- Sliding pile structure and its construction method.

The technical solution that the present invention solves the friction pile technical problem is to provide a kind of draining antiskid of embedded pile Pilework, it is characterised in that the friction pile includes lower part stake bottom structure, top pile body structure, round steel reinforcement cage one, round reinforcing bar Cage two and round steel reinforcement cage three；

The top pile body structure includes top annulus pile lining, upper circular stake core, upper circular pile, tilts and catchment Hole and top pile body remaining space；The lower part stake bottom structure includes lower part circle stake bottom and drainage hole；

The upper circular stake core, upper circular pile and top annulus pile lining are in turn connected to form entirety by pouring； Several upper circular pile annular arrays are between top annulus pile lining and upper circular stake core；Upper circular stake core inner tool There is the top of round steel reinforcement cage three；There is the top of round steel reinforcement cage two inside upper circular pile；Top circular annular pile pars intramuralis Top with round steel reinforcement cage one；Between top annulus pile lining and upper circular pile and upper circular stake core and top Pile body remaining space in top is formed between round pile；Metaling is filled in the top pile body remaining space；Top annulus The inclination gully-hole of several perforations is offered in pile lining；One end of inclination gully-hole is connected to top pile body remaining space；Inclination Metaling is filled in gully-hole；

Have under round steel reinforcement cage one, round steel reinforcement cage two and round steel reinforcement cage three inside the lower part circle stake bottom Portion；Upper circular stake core is connect by round steel reinforcement cage three with lower part circle stake bottom integral using casting method；Upper circular stake Column is connect by round steel reinforcement cage two with lower part circle stake bottom integral using casting method；Top annulus pile lining uses casting method It is connect by round steel reinforcement cage one with lower part circle stake bottom integral；Lower part offers several drainage holes in circle stake bottom；Draining It is equipped with geomembrane at the top of the one end in hole, and is connected to top pile body remaining space.

The draining that the technical solution that the present invention solves the construction method technical problem is to provide a kind of embedded pile is anti- The construction method of sliding pile structure, 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) precast reinforced cage: processing and fabricating circle steel reinforcement cage one, round steel reinforcement cage two and round steel reinforcement cage three；

3) according to the pre- round pile body exterior sheathing of pile body radius；According to the shape and size system of top pile body remaining space Make remaining space template；According to the size prefabricated stake center template of upper circular stake core；

4) it excavates inside stake holes to basement rock, and guarantees that stake holes radius is greater than friction pile radius；

5) the precast reinforced cage for obtaining step 2) is put into the stake holes excavated, then by round pile body external mold sleeve-board In the outside of round steel reinforcement cage one, concrete is poured into the height h in round pile body exterior sheathing until lower part circle stake bottom and pre- Stay drainage hole；Stake bottom structure in lower part is obtained after concrete setting；

6) by stake core model sleeve-board in the outside of the round steel reinforcement cage three of residual altitude, casting concrete；After concrete setting Stake core mold plate is removed, upper circular stake core is formed；

7) remaining space template is installed, then pours into concrete；Remaining space template and circle are removed after concrete setting Pile body exterior sheathing forms top annulus pile lining and upper circular pile, and reserved inclination gully-hole；

8) it is laid with geomembrane at the top of drainage hole, then metaling is fills up in the pile body remaining space of top, and will Metaling is fills up in inclination gully-hole；

9) space between antiskid stake body and stake holes is backfilled, is laid with clay in antiskid stake top after compacting.

The construction method of the prefabricated anti-slide pile structure of draining of a kind of embedded pile, it is characterised in that the construction method includes 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 radius is greater than friction pile radius；

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 geomembrane at the top of drainage hole, then metaling is fills up in the pile body remaining space of top, and will Metaling 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.

Compared with prior art, the beneficial effects of the invention are that:

1) this friction pile has excellent drain function: the water in slopes is imported pile body by tilting duct of catchmenting In metaling, then the water flowed into pile body is discharged by slopes by the water draining pass at lower part circle stake bottom in real time, dramatically Reduce rainfall and water level fluctuation of reservoir impact on slope stability.

2) bending resistance with higher of this friction pile and shear behavior: by steel reinforcement cage that top is round using one-piece casting method Ring pile lining, upper circular stake core, upper circular pile are connected with each other and connect to form entirety with lower part circle stake bottom respectively, together When upper circular pile between and upper circular pile and top annulus pile lining and upper circular stake core it is tangent, improve The globality of friction pile, pile body bending resistance with higher and shear behavior while ensure that drainage performance.

3) 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).Stake holes can be flexible according to geological conditions and economic benefit Selection such as spiral-digging pore or by several times the methods of folded brill circular hole molding, improve construction efficiency and ensure that construction safety.It applies Work method is mature, and process is simple, and quick and convenient, construction quality is easy to control.

Detailed description of the invention

Fig. 1 is overall structure schematic top plan view of the invention；

Fig. 2 is the direction the A-A perspective cross section schematic diagram of Fig. 1 of the invention；

Fig. 3 is the sectional schematic diagram of stake bottom structure in lower part of the invention；

Fig. 4 is friction pile operation schematic diagram of the invention.

In figure: 1, lower part circle stake bottom；2, top annulus pile lining；3, upper circular stake core；4, upper circular pile；5, Metaling；6, drainage hole；7, gully-hole is tilted；8, round steel reinforcement cage one；9, round steel reinforcement cage two；10, round steel reinforcement cage three； 11, sliding surface；12, basement rock；13, top pile body remaining space；14, geomembrane；15, clay.

Specific embodiment

Below with reference to examples and drawings, the invention will be further described.Specific embodiment is only used for further in detail Illustrate the present invention, does not limit the protection scope of the claim of this application.

The present invention provides a kind of draining anti-slide pile structure of embedded pile (abbreviation friction piles, referring to Fig. 1-3), spy Sign is that the friction pile includes lower part stake bottom structure, top pile body structure, round steel reinforcement cage 1, round steel reinforcement cage 29 and circle Shape steel reinforcement cage 3 10；

The top pile body structure includes top annulus pile lining 2, upper circular stake core 3, upper circular pile 4, inclination collection Water hole 7 and top pile body remaining space 13；The lower part stake bottom structure includes lower part circle stake bottom 1 and drainage hole 6；

The upper circular stake core 3, upper circular pile 4 and top annulus pile lining 2 by pour be in turn connected to form it is whole Body；Close-packed arrays are conducive to several upper circular piles 4 between top annulus pile lining 2 and upper circular stake core 3 in a ring Improve the globality of friction pile；There is the top of round steel reinforcement cage 3 10 inside upper circular stake core 3；In upper circular pile 4 Portion has the top of round steel reinforcement cage 29；There is the top of round steel reinforcement cage 1 inside top annulus pile lining 2；Top annulus It is remaining that top pile body is formed between pile lining 2 and upper circular pile 4 and between upper circular stake core 3 and upper circular pile 4 Space 13；Metaling 5 is filled in the top pile body remaining space 13 and is full of, and prevents the mixture flowed into slopes will Drainage hole 6 is blocked；The inclination gully-hole 7 of several perforations is offered in top annulus pile lining 2, convenient for collecting the water in slopes To pile body, and run through the rectangular pile lining 3 in top；One end of inclination gully-hole 7 is connected to top pile body remaining space 13；Inclination It is filled with metaling 5 in gully-hole 7 and is full of, other impurities flow into inclination gully-hole 7 with water in order to prevent, influence to catchment Effect；

There is round steel reinforcement cage 1, round steel reinforcement cage 29 and round steel reinforcement cage 3 10 inside the lower part circle stake bottom 1 Lower part；Upper circular stake core 3 is connect by round steel reinforcement cage 3 10 with lower part circle stake bottom 1 integral using casting method；On Portion's circle pile 4 is connect by round steel reinforcement cage 29 with lower part circle stake bottom 1 integral using casting method；Top annulus pile lining 2 use casting methods are connect by round steel reinforcement cage 1 with lower part circle stake bottom 1 integral；It is offered in lower part circle stake bottom 1 The drainage hole 6 (slopes are discharged in the water convenient for that will collect in pile body) that several circles (the present embodiment is two circles) penetrate through vertically, vertically Arrangement shortens flow path, and runs through lower part circle stake bottom 1；Being equipped with geomembrane 14 at the top of one end of drainage hole 6 (prevents broken Building stones 5 enter in drainage hole 6), and be connected to top pile body remaining space 13；It is filled with metaling 5 in drainage hole 6 and is full of.

Preferably, the height h at the lower part circle stake bottom 1 is 50~80cm；The height of top pile body structure is according to geology Condition determines；2 ring width d of top annulus pile lining and the relationship of antiskid stake body radius r areThe inclination is catchmented The section in hole 7 is the circle of diameter 1.5cm~4cm；The radius r of the upper circular pile 4₁With antiskid stake body radius r's Relationship are as follows:

The cross section at the lower part circle stake bottom 1 be it is round, cross dimensions according to practical geological conditions, economic benefit and The combined factors such as security performance determine.Lower part circle stake bottom 1 passes through sliding surface 11 and is embedded in 12 certain depth of basement rock i.e. drainage hole 6 It extend into basement rock 12, and lower part circle stake bottom 1 cannot be completely in 11 or less sliding surface.

The upper circular pile 4 and upper circular stake core 3 are solid cylinder；Two neighboring upper circular pile 4 Two two tangent and upper circular piles 4 and top annulus pile lining 2 and upper circular stake core 3 are tangent.

The axis collinear of the axis at the lower part circle stake bottom 1, the axis of top annulus pile lining 2 and upper circular stake core 3 And it is vertical.

Invention also provides a kind of construction method (the abbreviation construction parties of the draining anti-slide pile structure of embedded pile 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, analyzes the engineering geological condition on bevel edge slope With hydrometeorological condition, the letter such as position of landslide areas formation lithology, slopes material composition distribution situation and sliding surface 11 is grasped Breath analyzes the depth of quantity, size and the installation site and stake holes that determine friction pile；

2) precast reinforced cage: processing and fabricating circle steel reinforcement cage 1, round steel reinforcement cage 29 and round steel reinforcement cage 3 10；

3) prefab-form: prefab-form includes round pile body exterior sheathing, remaining space template and stake core mold plate；According to stake The pre- round pile body exterior sheathing of body radius；Remaining space template is made according to the shape and size of top pile body remaining space 13； According to the size prefabricated stake center template of upper circular stake core 3；

4) it excavates stake holes: according to design, excavating stake holes downwards from slope surface to 12 inside certain depth of basement rock, carry out Retaining wall processing, and guarantee that stake holes radius is greater than friction pile radius；

5) lower part stake bottom structure construction: precast reinforced cage (the round steel reinforcement cage 1, round steel reinforcement cage that step 2) is obtained 10) 29 are put into the stake holes excavated with round steel reinforcement cage 3, then by round pile body external mold sleeve-board in round steel reinforcement cage 1 Outside, concrete is poured into round pile body exterior sheathing until reaching the height h at lower part circle stake bottom 1 and reserved drainage hole 6；Stake bottom structure in lower part is obtained after concrete setting；

6) upper circular stake core 3 is constructed: by stake core model sleeve-board in the outside of the round steel reinforcement cage 3 10 of residual altitude, being poured Build concrete；Stake core mold plate is removed after concrete setting, forms upper circular stake core 3；

7) top annulus pile lining 2 and upper circular pile 4 are constructed: installation remaining space template, then pour into concrete；To Remaining space template and round pile body exterior sheathing are removed after concrete setting, form top annulus pile lining 2 and upper circular pile 4, and reserved inclination gully-hole 7；

8) construction in later period: being fills up to metaling 5 in drainage hole 6 and be full of first, then spreads at the top of drainage hole 6 If geomembrane 14, then metaling 5 is fills up in top pile body remaining space 13 and is full of, and metaling 5 is fills up to and is inclined In oblique gully-hole 7 and it is full of；

9) backfill and tamp: the space between backfill antiskid stake body and stake holes is laid in antiskid stake top after compacting and sticks Soil 15；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, analyzes the engineering geological condition on bevel edge slope With hydrometeorological condition, the letter such as position of landslide areas formation lithology, slopes material composition distribution situation and sliding surface 11 is grasped Breath analyzes the depth of quantity, size and the installation site and stake holes that determine friction pile；

2) it excavates stake holes: according to design, excavating stake holes downwards from slope surface to 12 inside certain depth of basement rock, carry out Retaining wall processing, and guarantee that stake holes radius is greater than friction pile radius；

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 metaling 5 in drainage hole 6 and be full of, is then laid with soil at the top of drainage hole 6 Then metaling 5 is fills up in top pile body remaining space 13 and is full of by work film 14, and metaling 5 is fills up to inclination collection In water hole 7 and it 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 15, 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 11 includes sliding surface or slip band；

The present invention does not address place and is suitable for the prior art.