CN109137942A - A kind of the expansive soil slope adaptive draining friction pile of deformation and construction method - Google Patents
A kind of the expansive soil slope adaptive draining friction pile of deformation and construction method Download PDFInfo
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- CN109137942A CN109137942A CN201811332042.XA CN201811332042A CN109137942A CN 109137942 A CN109137942 A CN 109137942A CN 201811332042 A CN201811332042 A CN 201811332042A CN 109137942 A CN109137942 A CN 109137942A
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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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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
- E02D3/02—Improving by compacting
- E02D3/10—Improving by compacting by watering, draining, de-aerating or blasting, e.g. by installing sand or wick drains
Abstract
The invention discloses a kind of expansive soil slope adaptive draining friction piles of deformation and construction method, including fixed section, water-stored section and stretch section, fixed section includes the first precast reinforced concrete piles and the first reinforced concrete core-tube, concrete has been poured between first precast reinforced concrete piles and the first reinforced concrete core-tube, water-stored section includes the second precast reinforced concrete piles and the second reinforced concrete core-tube, rubble is filled between second precast reinforced concrete piles and the second reinforced concrete core-tube, stretch section includes third precast reinforced concrete piles and concrete-pile, concrete-pile is spliced by multiple arcs precast concrete.Friction pile is divided into stretch section, water-stored section and fixed section by the present invention, coordinate swell-shrinking deformation of the swelled ground when undergoing drying and watering cycle by the deformation of stretch section, it can effectively prevent the generation of vertical tension crack, to be substantially reduced the lower infiltration of surface layer precipitation, the coordinated control to swelled ground swell-shrinking deformation is realized while giving full play to anti-slide performance.
Description
Technical field
The invention belongs to technical field of civil engineering, and in particular to a kind of expansive soil slope adaptive draining antiskid of deformation
Stake and construction method.
Background technique
Swelled ground is a kind of viscous for the high-ductility of main constituents with strongly hydrophilic mineral, such as montmorillonite, illite
Soil generates significant dilatancy after being mainly characterized by water suction, and significant contraction distortion is generated after dehydration, while also having more
Fissurity, overconsolidation and strength retrogression's property.Due to its engineering characteristic complicated difficult to administer commonly referred to as " problem soil ", work is given
Cheng Jianshe causes many puzzlements.
Unstability landslide often occurs for the slight slope of swelled ground area, such as embankment, cutting, channel side slopes.The mistake of expansive soil slope
Steady mechanism are as follows: swelled ground water swelling makes the swollen pine of soil block internal structure when rainfall, significantly reduces the intensity index of soil block；It is dry
When, swelled ground dehydration shrinkage forms tension crack, makes slope table layer soil body structure deterioration；And tension crack but also as next rainfall when
The channel that rainwater quickly infiltrates, thus cause under dry and wet effect soil strength further deterioration and tension crack it is further
Expansion；In addition, can also significantly improve the pore water pressure of inside soil body after rainfall infiltration, lead to the reduction of its effective stress；
The overall collapse of defeated and dispersed formula finally occurs for expansive soil slope under above-mentioned factor comprehensive function.
The engineering circles treating method even imperfect to expansive soil slope at present, the method mainly used are that whole change is filled out
Unexpansive soil；Or by weak expansive soil by adding cement, the materials such as lime be modified into unexpansive soil and change and fill out, change the master filled out
Acting on is ballast, and secondary role is closing swelled ground, but this method project amount is larger, at high cost, and cannot be fundamentally
Prevent the generation on landslide.
Friction pile is effective engineering measure of harnessing landslide, is widely used in slope treatment.It is inserted into slider bed by stake
Anti-skid power is provided in good ground below, in addition pile body is constructed for stablizing slopes to the embedding of pile peripheral earth.Also have many
Scholar has carried out a large amount of research and improvement to friction pile, proposes more novel friction pile, and such as various types of drainings are anti-
Sliding pile.Although swelled ground itself has swell-shrink characteristic, it also has overconsolidation, is not suffering from drying and watering cycle effect or experience less
Intensity is larger when measuring drying and watering cycle effect, and expansive soil slope is also sufficiently stable.But slope table layer soil body is followed in the multiple dry and wet of experience
A large amount of macroscopic view and micro-crack can be generated after ring, this aspect destroys the integrality of slopes, on the other hand quick for rainfall
It infiltrates and provides channel, then threaten the stability of side slope entirety.Therefore, the key of expansive soil slope stability is kept to be
Prevent the quick lower infiltration of surface layer precipitation.Conventional friction pile can not solve the problems, such as that expansive soil slope infiltrates, and various types of rows
Water friction pile then lays particular emphasis on the infiltration row to inside soil body pore water, equally can not effectively prevent rainwater infiltration.Due to the above reasons,
The friction pile of existing type is difficult effectively to solve the destabilization problems of expansive soil slope.
For technological deficiency of the existing type friction pile when administering expansive soil slope, the present invention provides one kind to control
The novel friction pile for seeping under layer precipitation tabulate quickly, Infiltration water capable of being discharged in time again.
Summary of the invention
Technical problem to be solved by the present invention lies in view of the above shortcomings of the prior art, provide a kind of expansive soil slope
With the adaptive draining friction pile of deformation and construction method.The present invention coordinates swelled ground by the deformation of stretch section in experience dry and wet
Swell-shrinking deformation when circulation, in swelled ground water swelling, stretch section is shunk, and the stretch section recoverable force in its syneresis,
The generation to macroscopical tension crack does not provide deformation space, the generation of vertical tension crack can be effectively prevent, to be substantially reduced surface layer
The lower infiltration of precipitation.The coordination control to swelled ground swell-shrinking deformation is realized while giving full play to the anti-slide performance of friction pile entirety
System.
In order to solve the above technical problems, the technical solution adopted by the present invention is that: a kind of expansive soil slope is adaptive with deformation
Drain friction pile, which is characterized in that including the fixed section, water-stored section and stretch section being sequentially distributed from bottom to top, the fixed section
Including the first precast reinforced concrete piles and the first reinforced concrete core-tube for being set on the outside of the first precast reinforced concrete piles,
Concrete is poured between first precast reinforced concrete piles and the first reinforced concrete core-tube, the water-stored section includes the
Two precast reinforced concrete piles and the second reinforced concrete core-tube being set on the outside of the second precast reinforced concrete piles, described the
Rubble is filled between two precast reinforced concrete piles and the second reinforced concrete core-tube, the stretch section includes that third reinforcing bar is mixed
Solidifying soil prefabricated pile and the concrete-pile being set on the outside of third precast reinforced concrete piles, the concrete-pile are cylindric knot
Structure, concrete-pile are spliced by multiple arcs precast concrete, pass through bullet between two neighboring arc precast concrete
The connection of spring component, is provided with elastic parts, institute between third precast reinforced concrete piles and multiple arcs precast concrete
Stating elastic parts includes the multiple elastic components uniformly distributed along the axial direction of third precast reinforced concrete piles, and the one of the elastic component
The inside of arc precast concrete is fixed at end, and the other end of elastic component is fixed on the outer of third precast reinforced concrete piles
Side.
Above-mentioned a kind of expansive soil slope adaptive draining friction pile of deformation, which is characterized in that first reinforcing bar is mixed
Solidifying soil prefabricated pile and the second precast reinforced concrete piles are an integral structure, first reinforced concrete core-tube and the second reinforcing bar
Concrete guard wall is an integral structure.
Above-mentioned a kind of expansive soil slope adaptive draining friction pile of deformation, which is characterized in that two neighboring arc is mixed
Between solidifying soil prefabricated component and be located at the two sides of spring assembly and be provided with folding component, the left end of the folding component be located at it
The arc precast concrete in left side is fixedly connected, and the right end of folding component and the arc precast concrete being located on the right side of it are solid
Fixed connection.
A kind of above-mentioned expansive soil slope adaptive draining friction pile of deformation, which is characterized in that the folding component packet
Two folded sheets are included, two folded sheets are rotatablely connected by shaft, are provided with compressed spring, the folding between two folded sheets
Thickness direction on plate along folded sheet is provided with through-hole.
Above-mentioned a kind of expansive soil slope adaptive draining friction pile of deformation, which is characterized in that be located at outside spring assembly
The outer surface of the folding component of side is provided with geomembrane.
Above-mentioned a kind of expansive soil slope adaptive draining friction pile of deformation, which is characterized in that the compressed spring
The inside of a folded sheet is fixed in one end, and the other end of compressed spring is fixed on the inside of another folded sheet.
A kind of above-mentioned expansive soil slope adaptive draining friction pile of deformation, which is characterized in that the spring assembly packet
It includes and is set to multiple spring parts between two neighboring arc precast concrete and uniformly distributed along the axial direction of concrete-pile.
Above-mentioned a kind of expansive soil slope adaptive draining friction pile of deformation, which is characterized in that the elastic component is steel
Spring processed, the stretch section top are provided with stake lid.
Above-mentioned a kind of expansive soil slope adaptive draining friction pile of deformation, which is characterized in that the third reinforcing bar is mixed
Gap of catchmenting is formed between solidifying soil prefabricated pile and concrete-pile, is provided on the outside of the arc precast concrete and the sky that catchments
The collector pipe that gap is connected.
In addition, the present invention also provides a kind of above-mentioned expansive soil slope construction parties of the adaptive draining friction pile of deformation
Method, which comprises the following steps:
Step 1: determining local rainfall limiting condition according to the weather conditions on practice of construction ground, is calculated and dropped using following formula
Water infiltrates depth:
Wherein h is that depth is soaked in rainfall, and unit is rice；K is soil body saturation permeability coefficient, and unit is m/h；T is to hold
Continuous rain time, unit is hour；S0For the initial saturation degree of the soil body；N is soil cracking behavior；
Step 2: the length of design flexibility section is h~(h+ according to the precipitation infiltration depth h being calculated in step 1
0.5) rice；The depth of bedrock surface is determined according to the prospecting data of practice of construction landform and side slope, so that it is determined that the length of water-stored section,
The length for being located at the bottom of water-stored section on bedrock surface, and designing fixed section is the 1/3~2/5 of friction pile total length；
Step 3: carrying out drilling construction in side slope, it is poured concrete guard wall during drilling construction, forms the first reinforcing bar
Concrete guard wall and the second reinforced concrete core-tube, the first precast reinforced concrete piles and the second precast reinforced concrete piles are set
In in drilling；
Step 4: the casting concrete between the first reinforced concrete core-tube and the first precast reinforced concrete piles, forms
Fixed section, the fixed section are fixed in basement rock；Between the second reinforced concrete core-tube and the second precast reinforced concrete piles
Rubble is filled, water-stored section is formed；
Step 5: elastic parts is welded in third precast reinforced concrete piles outer wall, it is then that multiple arcs concrete is pre-
Product is placed on the outside of third precast reinforced concrete piles and is welded to connect with the elastic parts of corresponding position, then by two neighboring arc
It is connected between shape precast concrete with spring assembly, forms stretch section；
Step 6: stretch section is placed in drilling and is located above water-stored section, then covered above stretch section with stake lid.
Compared with the prior art, the present invention has the following advantages:
1, present invention setting stretch section, coordinates breathing of the swelled ground when undergoing drying and watering cycle by the deformation of stretch section
Deformation, in swelled ground water swelling, stretch section is shunk, and the stretch section recoverable force in its syneresis, not to macroscopical drawing crack
The generation of gap provides deformation space, the generation of vertical tension crack can be effectively prevent, to be substantially reduced the lower infiltration of surface layer precipitation.
2, the present invention is collected a small amount of precipitation infiltrated inside slopes to water storage using the collector pipe system outside stretch section
Section, can quickly and effectively be discharged Infiltration water.
3, friction pile is divided into stretch section, water-stored section and fixed section by the present invention, has fully played the anti-of friction pile entirety
Sliding ability, and the coordinated control to swelled ground swell-shrinking deformation is realized using its deformation behaviour.
4, the structure of stretch section of the invention includes that internal precast reinforced concrete piles, the multiple arcs of external discrete are mixed
Spring assembly between solidifying soil prefabricated component and elastic parts and two neighboring arc precast concrete between the two, tool
Have the advantages that adaptation soil deformation ability is strong, elasticity is good, is conducive to catchment for recovery；The present invention is preferably set in the two sides of spring assembly
The folding component for opening up through-hole is set, and geomembrane is arranged in the outer surface of the folding component on the outside of spring assembly, effectively plays
Every the effect of soil infiltration.Have in structure compared to other kinds of draining friction pile significant innovative.
With reference to the accompanying drawings and examples, technical scheme of the present invention will be described in further detail.
Detailed description of the invention
Fig. 1 is the main view of the adaptive draining friction pile of deformation of the invention.
Fig. 2 is the cross-sectional view of stretch section of the present invention.
Fig. 3 is the partial enlarged view at the A of Fig. 2.
Fig. 4 is the structural schematic diagram of folding component of the present invention.
Fig. 5 is the cross-sectional view of water-stored section of the present invention.
Fig. 6 is the cross-sectional view of fixed section of the present invention.
Fig. 7 is position view of the adaptive draining friction pile of present invention deformation in side slope.
Description of symbols:
1-fixed section；2-water-stored sections；3-stretch sections；
4-the first precast reinforced concrete piles；5-the first reinforced concrete core-tube；
6-concrete；7-the second precast reinforced concrete piles；
8-the second reinforced concrete core-tube；9-rubbles；
10-third precast reinforced concrete piles；11-arc precast concretes；
12-spring assemblies；13-elastic components；
14-folding components；14-1-folded sheet；
14-2-shaft；14-3-through-hole；
14-4-compressed spring；15-catchment gap；
16-collector pipes；17-stake lids.
Specific embodiment
Embodiment 1
As shown in Figure 1, Figure 2, shown in Fig. 5 and Fig. 6, the expansive soil slope of the invention adaptive draining friction pile of deformation, including
Fixed section 1, water-stored section 2 and the stretch section 3 being sequentially distributed from bottom to top, the fixed section 1 include that the first armored concrete is prefabricated
Stake 4 and the first reinforced concrete core-tube 5 for being set in 4 outside of the first precast reinforced concrete piles, first armored concrete
Concrete 6 is poured between prefabricated pile 4 and the first reinforced concrete core-tube 5, the water-stored section 2 includes that the second armored concrete is pre-
Stake 7 processed and the second reinforced concrete core-tube 8 for being set in 7 outside of the second precast reinforced concrete piles, second reinforced concrete
Rubble 9 is filled between native prefabricated pile 7 and the second reinforced concrete core-tube 8, the stretch section 3 includes that third armored concrete is pre-
Stake 10 processed and the concrete-pile for being set in 10 outside of third precast reinforced concrete piles, the concrete-pile are cylinder-like structure,
Concrete-pile is spliced by multiple arcs precast concrete 11, passes through bullet between two neighboring arc precast concrete 11
Spring component 12 connects, and elastic group is provided between third precast reinforced concrete piles 10 and multiple arcs precast concrete 11
Part, the elastic parts includes the multiple elastic components 13 uniformly distributed along the axial direction of third precast reinforced concrete piles 10, described
The inside of arc precast concrete 11 is fixed in one end of elastic component 13, and it is mixed that the other end of elastic component 13 is fixed on third reinforcing bar
The outside of solidifying soil prefabricated pile 10.
In the present embodiment, first precast reinforced concrete piles 4 and the second precast reinforced concrete piles 7 are integral type knot
Structure, first reinforced concrete core-tube 5 and the second reinforced concrete core-tube 8 are an integral structure.
As shown in Fig. 2, between two neighboring arc precast concrete 11 and being located at spring assembly 12 in the present embodiment
Two sides are provided with folding component 14, and the left end of the folding component 14 and the arc precast concrete 11 being located on the left of it are solid
Fixed connection, the right end of folding component 14 are fixedly connected with the arc precast concrete 11 being located on the right side of it.
In Fig. 3 and Fig. 4 the present embodiment, the folding component 14 includes two folded sheets 14-1, two folded sheet 14-1
It is rotatablely connected by shaft 14-2, compressed spring 14-4, edge on the folded sheet 14-1 is provided between two folded sheet 14-1
The thickness direction of folded sheet 14-1 is provided with through-hole 14-3.
In the present embodiment, the outer surface positioned at the folding component 14 in 12 outside of spring assembly is provided with geomembrane.
In the present embodiment, the inside of a folded sheet 14-1, compressed spring are fixed in one end of the compressed spring 14-4
The other end of 14-4 is fixed on the inside of another folded sheet 14-1.
In the present embodiment, the spring assembly 12 includes being set between two neighboring arc precast concrete 11 and edge
The uniformly distributed multiple spring parts of the axial direction of concrete-pile.
In the present embodiment, the elastic component 13 is steel spring, is provided with a lid 17 above the stretch section 3.
In the present embodiment, gap 15 of catchmenting, institute are formed between the third precast reinforced concrete piles 10 and concrete-pile
The outside for stating arc precast concrete 11 is provided with the collector pipe 16 being connected with gap 15 of catchmenting.
Embodiment 2
The construction method of the expansive soil slope of the invention adaptive draining friction pile of deformation, comprising the following steps:
Step 1: determining local rainfall limiting condition according to the weather conditions on practice of construction ground, is calculated and dropped using following formula
Water infiltrates depth:
Wherein h is that depth is soaked in rainfall, and unit is rice；K is soil body saturation permeability coefficient, and unit is m/h；T is to hold
Continuous rain time, unit is hour；S0For the initial saturation degree of the soil body；N is soil cracking behavior；
Step 2: the length of design flexibility section 3 is h~(h+ according to the precipitation infiltration depth h being calculated in step 1
0.5) rice, specific length rule of thumb can be determined finally in conjunction with the unstability depth of local expansive soil slope；According to practice of construction
The prospecting data of shape and side slope determines the depth of bedrock surface, so that it is determined that the length of water-stored section 2, is located at the bottom of water-stored section 2
On bedrock surface, and the length for designing fixed section 1 is the 1/3~2/5 of friction pile total length, and specific length can be existing according to practice of construction
Field situation and anti-slide pile controlling engineering design specification determine；
Step 3: carrying out drilling construction in side slope, it is poured concrete guard wall during drilling construction, forms the first reinforcing bar
Concrete guard wall 5 and the second reinforced concrete core-tube 8, the first precast reinforced concrete piles 4 and the second armored concrete are prefabricated
Stake 7 is placed in drilling；
Step 4: the casting concrete 6 between the first reinforced concrete core-tube 5 and the first precast reinforced concrete piles 4, shape
At fixed section 1, the fixed section 1 is fixed in basement rock；In the second reinforced concrete core-tube 8 and the second precast reinforced concrete piles
Rubble 9 is filled between 7, forms water-stored section 2；
Step 5: elastic parts is welded in 10 outer wall of third precast reinforced concrete piles, then by multiple arcs concrete
Prefabricated component 11 is placed in 10 outside of third precast reinforced concrete piles and is welded to connect with the elastic parts of corresponding position, then will be adjacent
Fixed fold component 14 and spring assembly 12 between two arc precast concretes 11 form stretch section 3；
Step 6: then being covered with stake lid 17 as shown in fig. 7, stretch section 3 is placed in drilling and positioned at 2 top of water-stored section
Above stretch section 3.
Draining friction pile of the invention when in use, by the special construction of stretch section, so that swelled ground is in water swelling
When stretch section shrink, and the stretch section recoverable force in its syneresis, the generation to macroscopical tension crack provides deformation space,
It can be effectively prevent the generation of vertical tension crack, to be substantially reduced the lower infiltration of surface layer precipitation.By the way that the sky that catchments is arranged in stretch section
Gap, the collector pipe on stretch section can be collected a small amount of precipitation infiltrated inside slopes to water-stored section by gap of catchmenting, thus
Quickly and effectively discharge Infiltration water.Soil deformation ability is strong, elasticity is good, is conducive to for recovery with adapting to for draining friction pile of the invention
The advantages that catchmenting.
The above is only presently preferred embodiments of the present invention, not does any restrictions to the present invention, all according to invention skill
Art any simple modification substantially to the above embodiments, change and equivalent structural changes, still fall within the technology of the present invention
In the protection scope of scheme.
Claims (10)
1. a kind of expansive soil slope adaptive draining friction pile of deformation, which is characterized in that including what is be sequentially distributed from bottom to top
Fixed section (1), water-stored section (2) and stretch section (3), the fixed section (1) include the first precast reinforced concrete piles (4) and are set with
The first reinforced concrete core-tube (5) on the outside of the first precast reinforced concrete piles (4), first precast reinforced concrete piles
(4) it has been poured between the first reinforced concrete core-tube (5) concrete (6), the water-stored section (2) includes the second armored concrete
Prefabricated pile (7) and the second reinforced concrete core-tube (8) being set on the outside of the second precast reinforced concrete piles (7), described second
Rubble (9) are filled between precast reinforced concrete piles (7) and the second reinforced concrete core-tube (8), the stretch section (3) includes
Third precast reinforced concrete piles (10) and the concrete-pile being set on the outside of third precast reinforced concrete piles (10), it is described mixed
Solidifying soil stake is cylinder-like structure, and concrete-pile is spliced by multiple arcs precast concrete (11), and two neighboring arc is mixed
It is connected between solidifying soil prefabricated component (11) by spring assembly (12), third precast reinforced concrete piles (10) and multiple arcs coagulation
Elastic parts is provided between native prefabricated component (11), the elastic parts includes along third precast reinforced concrete piles (10)
Axial uniformly distributed multiple elastic components (13), arc precast concrete (11) is fixed in one end of the elastic component (13)
The other end of inside, elastic component (13) is fixed on the outside of third precast reinforced concrete piles (10).
2. a kind of expansive soil slope described in accordance with the claim 1 adaptive draining friction pile of deformation, which is characterized in that described
First precast reinforced concrete piles (4) and the second precast reinforced concrete piles (7) are an integral structure, first reinforced concrete
Native retaining wall (5) and the second reinforced concrete core-tube (8) are an integral structure.
3. a kind of expansive soil slope described in accordance with the claim 1 adaptive draining friction pile of deformation, which is characterized in that adjacent
It is provided with folding component (14) between two arc precast concretes (11) and positioned at the two sides of spring assembly (12), it is described
The left end of folding component (14) is fixedly connected with the arc precast concrete (11) being located on the left of it, the right side of folding component (14)
It holds and is fixedly connected with the arc precast concrete (11) being located on the right side of it.
4. a kind of expansive soil slope described in accordance with the claim 3 adaptive draining friction pile of deformation, which is characterized in that described
Folding component (14) includes two folded sheets (14-1), and two folded sheets (14-1) are rotatablely connected by shaft (14-2), and two
It is provided between folded sheet (14-1) compressed spring (14-4), along the thickness side of folded sheet (14-1) on the folded sheet (14-1)
To being provided with through-hole (14-3).
5. a kind of expansive soil slope adaptive draining friction pile of deformation according to claim 4, which is characterized in that be located at
The outer surface of folding component (14) on the outside of spring assembly (12) is provided with geomembrane.
6. a kind of expansive soil slope adaptive draining friction pile of deformation according to claim 4, which is characterized in that described
The inside of a folded sheet (14-1) is fixed in one end of compressed spring (14-4), and the other end of compressed spring (14-4) is fixed on
The inside of another folded sheet (14-1).
7. a kind of expansive soil slope described in accordance with the claim 1 adaptive draining friction pile of deformation, which is characterized in that described
Spring assembly (12) includes being set between two neighboring arc precast concrete (11) and along the axial uniform of concrete-pile
The multiple spring parts laid.
8. a kind of expansive soil slope described in accordance with the claim 1 adaptive draining friction pile of deformation, which is characterized in that described
Elastic component (13) is steel spring, is provided with stake lid (17) above the stretch section (3).
9. a kind of expansive soil slope described in accordance with the claim 1 adaptive draining friction pile of deformation, which is characterized in that described
It is formed and is catchmented gap (15) between third precast reinforced concrete piles (10) and concrete-pile, the arc precast concrete
(11) collector pipe (16) being connected with gap of catchmenting (15) is provided on the outside of.
10. a kind of expansive soil slope as described in any claim in claim 1 to 9 is with the adaptive draining friction pile of deformation
Construction method, which comprises the following steps:
Step 1: determining local rainfall limiting condition according to the weather conditions on practice of construction ground, precipitation is calculated using following formula and is entered
Seep depth:
Wherein h is that depth is soaked in rainfall, and unit is rice；K is soil body saturation permeability coefficient, and unit is m/h；T is lasting drop
Rain time, unit are hour；S0For the initial saturation degree of the soil body；N is soil cracking behavior；
Step 2: the length of design flexibility section (3) is h~(h+ according to the precipitation infiltration depth h being calculated in step 1
0.5) rice；The depth of bedrock surface is determined according to the prospecting data of practice of construction landform and side slope, so that it is determined that the length of water-stored section (2)
Degree, is located at the bottom of water-stored section (2) on bedrock surface, and the length for designing fixed section (1) is the 1/3~2/ of friction pile total length
5；
Step 3: carrying out drilling construction in side slope, it is poured concrete guard wall during drilling construction, forms the first reinforced concrete
Native retaining wall (5) and the second reinforced concrete core-tube (8), the first precast reinforced concrete piles (4) and the second armored concrete are pre-
Stake (7) processed is placed in drilling；
Step 4: the casting concrete (6) between the first reinforced concrete core-tube (5) and the first precast reinforced concrete piles (4),
It is formed fixed section (1), the fixed section (1) is fixed in basement rock；In the second reinforced concrete core-tube (8) and the second reinforced concrete
Rubble (9) are filled between native prefabricated pile (7), are formed water-stored section (2)；
Step 5: elastic parts is welded in third precast reinforced concrete piles (10) outer wall, it is then that multiple arcs concrete is pre-
Product (11) is placed on the outside of third precast reinforced concrete piles (10) and is welded to connect with the elastic parts of corresponding position, then by phase
It is connected, is formed stretch section (3) with spring assembly (12) between adjacent two arc precast concretes (11)；
Step 6: stretch section (3) is placed in drilling and is located above water-stored section (2), then covered with stake lid (17) in stretch section
(3) top.
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| CN201811332042.XA CN109137942B (en) | 2018-11-09 | 2018-11-09 | Deformation self-adaptive drainage slide-resistant pile for expansive soil slope and construction method |
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| CN110172981A (en) * | 2019-06-05 | 2019-08-27 | 招商局重庆交通科研设计院有限公司 | One kind is from precipitation prestressing force antiskid tubular pole and its construction method |
| CN110359450A (en) * | 2019-07-29 | 2019-10-22 | 中铁二院工程集团有限责任公司 | Assembled circle pilework and construction method |
| CN110528540A (en) * | 2019-08-23 | 2019-12-03 | 河北工业大学 | A kind of the draining anti-slide pile structure and its construction method of embedded pile |
| CN111622240A (en) * | 2020-06-02 | 2020-09-04 | 四川大学 | Trapezoidal toe-added drainage slide-resistant pile and construction method thereof |
| CN112376590A (en) * | 2020-12-10 | 2021-02-19 | 中国地质科学院探矿工艺研究所 | Anti-skidding structure adaptive to swelling and shrinking deformation of expansive soil slope and application method |
| CN112411583A (en) * | 2020-12-10 | 2021-02-26 | 中国地质科学院探矿工艺研究所 | Integrated form side slope drainage reinforcerment system |
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| CN110172981A (en) * | 2019-06-05 | 2019-08-27 | 招商局重庆交通科研设计院有限公司 | One kind is from precipitation prestressing force antiskid tubular pole and its construction method |
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| 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 |
| CN112376590A (en) * | 2020-12-10 | 2021-02-19 | 中国地质科学院探矿工艺研究所 | Anti-skidding structure adaptive to swelling and shrinking deformation of expansive soil slope and application method |
| CN112411583A (en) * | 2020-12-10 | 2021-02-26 | 中国地质科学院探矿工艺研究所 | Integrated form side slope drainage reinforcerment system |
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