CN109577307A - Combination of rigidity and flexibility stake and its construction method - Google Patents
Combination of rigidity and flexibility stake and its construction method Download PDFInfo
- Publication number
- CN109577307A CN109577307A CN201910021759.0A CN201910021759A CN109577307A CN 109577307 A CN109577307 A CN 109577307A CN 201910021759 A CN201910021759 A CN 201910021759A CN 109577307 A CN109577307 A CN 109577307A
- Authority
- CN
- China
- Prior art keywords
- inner sleeve
- outer tube
- rigidity
- pile
- combination
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000010276 construction Methods 0.000 title claims abstract description 22
- 238000005266 casting Methods 0.000 claims abstract description 18
- 239000000945 filler Substances 0.000 claims abstract description 14
- 239000004567 concrete Substances 0.000 claims abstract description 12
- 239000002131 composite material Substances 0.000 description 25
- 239000002689 soil Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 238000009740 moulding (composite fabrication) Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 2
- 235000011941 Tilia x europaea Nutrition 0.000 description 2
- 239000004568 cement Substances 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000004571 lime Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
- 230000018199 S phase Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009435 building construction Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
Classifications
-
- 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
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
- E02D5/34—Concrete or concrete-like piles cast in position ; Apparatus for making same
- E02D5/38—Concrete or concrete-like piles cast in position ; Apparatus for making same making by use of mould-pipes or other moulds
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/72—Pile shoes
Landscapes
- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Agronomy & Crop Science (AREA)
- Environmental & Geological Engineering (AREA)
- Soil Sciences (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The present invention provides a kind of combination of rigidity and flexibility stake and its construction method, combination of rigidity and flexibility stake includes: shoe, is set in ground, and outer tube is arranged in the shoe, and inner sleeve is inserted in the outer tube, forms casting space between the outer tube and the inner sleeve；Rigid tubular pole has poured concrete in the casting space to form the rigid tubular pole；And flexible pile core, filled with filler to form the flexible pile core in the inner sleeve.The present invention solves the problems, such as that flexible pile is small to ground bearing power increase amplitude and rigid pile cost is high.
Description
Technical field
The present invention relates to technical field of building construction, and in particular to a kind of combination of rigidity and flexibility stake and its construction method.
Background technique
Composite foundation with piles in inhomogeneous strata is the people for being placed in perpendicular reinforcing body in subsoil and bearing upper load and compatible deformation jointly
Building site base.In addition to discrete material pile such as broken stone pile, sand pile, composite foundation with piles in inhomogeneous strata can be divided into flexible pile according to the property of reinforcement again
Composite foundation and rigid pile composite foundation.For tier building, frequently with discrete material pile (broken stone pile, sand pile etc.), flexible pile
(lime soil pile, lime pile, cement earth pile etc.) composite foundation soft soil foundation.But discrete material pile, flexible pile composite foundation
Limited to the increase rate of foundation bearing capacity, which has limited the ranges that it is used.
The pile body of rigid pile composite foundation is usually with cement for main cementing material, such as low-grade concrete stake, CFG
Stake, high-pressure rotary jet grouting pile etc., intensity with higher, strength grade is generally in 10MPa~20MPa.Rigid pile composite foundation by
Compression concretion deformation is generated from load-bearing is started in inter-pile soil, simultaneously because strength of the mixing pile is higher, the decrement of pile body itself is small,
It is smaller in the relative displacement of pile body top pile body and surrounding soil, thus the transmittance process that its own vertical force moves down is very fast
Speed, bearing power increase amplitude adjustable extent are big.Rigid pile composite foundation deformation modulus height, pile quality and durability have guarantor simultaneously
Barrier, therefore have bigger applicability in practical applications.But rigid pile cost is higher, and which also limits its use scopes.
Summary of the invention
To overcome the defects of present in the prior art, a kind of combination of rigidity and flexibility stake and its construction method are now provided, it is soft to solve
The problem that property stake is small to ground bearing power increase amplitude and rigid pile cost is high.
To achieve the above object, a kind of combination of rigidity and flexibility stake and its construction method are provided, comprising:
Shoe is set in ground, and outer tube is arranged in the shoe, and inner sleeve, institute are inserted in the outer tube
It states and forms casting space between outer tube and the inner sleeve；
Rigid tubular pole has poured concrete in the casting space to form the rigid tubular pole；And
Flexible pile core, filled with filler to form the flexible pile core in the inner sleeve.
Further, the filler is rubble.
Further, the ratio between the internal diameter of the wall thickness of the rigid tubular pole and the rigid tubular pole is 1:1~4.
Further, the ratio between the internal diameter of the wall thickness of the rigid tubular pole and the rigid tubular pole is 3:5.
The present invention provides a kind of construction method of combination of rigidity and flexibility stake, comprising the following steps:
Shoe is provided, the shoe is directed at downwards ground；
Outer tube is provided, the outer tube is sheathed in the shoe；
Inner sleeve is provided, the inner sleeve is inserted in the outer tube, so that the outer tube and the inner sleeve
Between form casting space；
Outer tube described in vibration-sunk and the inner sleeve are to projected depth；
In casting concrete in the casting space to form rigid tubular pole, filler is filled in Yu Suoshu inner sleeve to be formed
Flexible pile core；
The outer tube and the inner sleeve are extracted in vibration.
The beneficial effects of the present invention are a kind of rigidity of combination of rigidity and flexibility stake of the invention and composite foundation processing sides flexible
Method mainly carries out pore-formings using special double immersed tube (outer tube and inner sleeve), convenient and quick construction, using immersed tube (inner sleeve) into
Row filler is launched, and at internal flexible pile (core), the space between double immersed tube (between outer tube and inner sleeve) carries out small lead for vibration
Pipe pump concrete forms the rigid tubular pole of outer ring up to reaching ground.Due to having used inside and outside double immersed tube, not only make pile body
Continuously, no necking down pile breaking phenomenon, and can once form interior soft, outer rigid two class pile bodies (rigid tubular pole and flexible pile core).
The sinking apparatus of the combination of rigidity and flexibility stake is simple, easy for construction, will not pollute to surrounding enviroment in construction, and combination of rigidity and flexibility stake exists
Use in engineering is particularly suitable for all kinds of soft foundations, it will help solves the problems, such as many engineering practices, save the cost, contracting
Casual labourer's phase improves construction quality, provides better prospect.
Detailed description of the invention
Fig. 1 is the top view of the combination of rigidity and flexibility stake of the embodiment of the present invention.
Fig. 2 is the schematic cross-sectional view that the combination of rigidity and flexibility stake of the embodiment of the present invention is arranged.
Specific embodiment
Illustrate embodiments of the present invention below by way of specific specific example, those skilled in the art can be by this specification
Other advantages and efficacy of the present invention can be easily understood for disclosed content.The present invention can also pass through in addition different specific realities
The mode of applying is embodied or practiced, the various details in this specification can also based on different viewpoints and application, without departing from
Various modifications or alterations are carried out under spirit of the invention.
Fig. 1 is that structural schematic diagram, Fig. 2 of the combination of rigidity and flexibility stake of the embodiment of the present invention are the combination of rigidity and flexibility of the embodiment of the present invention
The schematic cross-sectional view of stake arrangement.
Shown in referring to Figures 1 and 2, the present invention provides a kind of combination of rigidity and flexibility stakes, comprising: shoe (attached to be not shown in the figure),
Rigid tubular pole 11 and flexible pile core 12.
Specifically, shoe is set in ground.Outer tube 11 is arranged in shoe.Inner sleeve 12 is inserted in outer tube.
Casting space is formed between outer tube 11 and inner sleeve 12.Concrete has been poured in casting space to form rigid tubular pole 11.It is interior
Filled with filler to form flexible pile core 12 in casing.
A kind of rigidity of combination of rigidity and flexibility stake of the invention and treatment process of composite foundation flexible mainly utilize special double immersed tube
(outer tube and inner sleeve) carries out pore-forming, and convenient and quick construction carries out filler dispensing using immersed tube (inner sleeve), vibrates into inside
Flexible pile (core), the space between double immersed tube (between outer tube and inner sleeve) carries out ductule pump concrete until reaching ground
Face forms the rigid tubular pole of outer ring.Due to having used inside and outside double immersed tube, not only make pile body continuous, no necking down pile breaking phenomenon, and
And it can once form interior soft, outer rigid two class pile bodies (rigid tubular pole and flexible pile core).The sinking apparatus of the combination of rigidity and flexibility stake
Simply, easy for construction, surrounding enviroment will not be polluted in construction, use of the combination of rigidity and flexibility stake in engineering is especially suitable
In all kinds of soft foundations, it will help solve the problems, such as many engineering practices, save the cost shortens the construction period, and improves construction quality, mentions
For better prospect.
In the present embodiment, filler is rubble.
As shown in connection with fig. 2, the horizontal layout of more hard and soft composite piles is using square or quincunx.Hard and soft composite pile
Stake spacing be generally 1.0m~3.0m, the outer diameter of the flexible pile core of hard and soft composite pile is 30cm~80cm, rigid tubular pole
Outer diameter is 50cm~100cm, and the long stake of hard and soft composite pile is preferably 5m~20m.
The length (h) of the hard and soft composite pile of the periphery of the square or quincunx pile group of more hard and soft composite piles building
For the length (H) of the hard and soft composite pile of inside
Setting half rigidity fill up layer at the top of the square or quincunx pile group of more hard and soft composite piles building, (thickness is generally
400mm~600mm), centre is laid with two layers of steel and moulds grid, is roadbed filling on bed course.
As a kind of preferable embodiment, the ratio between internal diameter of wall thickness of rigid tubular pole 11 and rigid tubular pole 11 for 1:1~
4.In the present embodiment, the ratio between the internal diameter of the wall thickness of rigid tubular pole and the rigid tubular pole is 3:5.Specifically, certain is reclaimed fields from the sea
Area road bridge foundation, soil property is uneven, and engineering mechanics property is very poor.It is difficult to meet road end of the bridge use without processing and want
It asks, is easy to appear bumping at bridge-head.This area is experience have shown that big using flexible pile settlement after construction, it is difficult to solving problem of vehicle bump at bridge head；
Using rigid pile, cost is high, and rigidity is excessive, leads to pile body and soil body void, it is difficult to play composite foundation effect.
Combination of rigidity and flexibility stake is applied to the section.The pilespacing of hard and soft composite pile presses square arrangement, hard and soft composite pile
Stake spacing 1.8m.The outer campshed of roadbed leg wire of slope.The outer diameter 50cm of the flexible pile core of hard and soft composite pile, hard and soft composite pile it is rigid
Property tubular pole outer diameter 80cm, the pile lining thickness of rigid tubular pole is 30cm.
The section is applied to using combination of rigidity and flexibility stake of the invention, practice of construction is convenient, and speed is fast, and effect reaches after processing
Road occupation requirement.Through field measurement and theoretical Inversion Calculation: settlement after construction 6.21cm in 15 years validity periods of road meets rule
Model requirement.Combination of rigidity and flexibility pile driving construction of the invention is quick, pollution-free, cost relative stiffness stake is lower, the stake of effect relative flexibility is good,
It is a kind of NEW TYPE OF COMPOSITE foundation technical method suitable for soft subgrade treatment.
The present invention provides a kind of construction method of combination of rigidity and flexibility stake, comprising the following steps:
S1: shoe is provided, shoe is directed at downwards ground.
Specifically, prefabricated shoe, and shoe is installed, so that shoe is directed at downwards ground.
S2: outer tube is provided, outer tube is sheathed in shoe.
Outer tube is steel sleeve.Outer tube is installed in shoe, so that outer tube is sheathed in shoe.
S3: providing inner sleeve, inner sleeve be inserted in outer tube, pours sky so that being formed between outer tube and inner sleeve
Between.
Inner sleeve is steel sleeve.Inner sleeve is inserted in outer tube, so that the inner tubal wall of outer tube and inner sleeve is outer
The casting space for being used for casting concrete is formed between tube wall.
S4: vibration-sunk outer tube and inner sleeve to projected depth.
Vibration-sunk outer tube and inner sleeve, so that the projected depth of shoe, outer tube and inner sleeve to combination of rigidity and flexibility stake.
S5: in casting concrete in casting space to form rigid tubular pole, filler is filled in inner sleeve to form flexibility
Stake core.
After outer tube and inner sleeve sink down into projected depth, using ductule pump concrete until reaching ground, together
When, crushed rock filler is filled in inner sleeve, so that forming rubble flexible pile core in inner sleeve.
S6: outer tube and inner sleeve are extracted in vibration.
Outer tube and inner sleeve are extracted in vibration, make flexible pile core height meet design height in supplement crushed rock filler.
It should be noted that this specification structure depicted in this specification institute accompanying drawings, ratio, size etc., only to cooperate
The bright revealed content of book is not intended to limit the invention enforceable limit so that those skilled in the art understands and reads
Fixed condition, therefore do not have technical essential meaning, the modification of any structure, the change of proportionate relationship or the adjustment of size, not
It influences still fall in disclosed technology contents under the effect of present invention can be generated and the purpose that can reach and obtain
In the range of capable of covering.Meanwhile it is cited such as "upper", "lower", "left", "right", " centre " and " one " in this specification
Term is merely convenient to being illustrated for narration, rather than to limit the scope of the invention, the change of relativeness or tune
It is whole, under the content of no substantial changes in technology, when being also considered as the enforceable scope of the present invention.
The present invention has been described in detail with reference to the accompanying drawings, those skilled in the art can be according to upper
It states and bright many variations example is made to the present invention.Thus, certain details in embodiment should not constitute limitation of the invention, this
Invention will be using the range that the appended claims define as protection scope.
Claims (5)
1. a kind of combination of rigidity and flexibility stake characterized by comprising
Shoe is set in ground, and outer tube is arranged in the shoe, and inner sleeve is inserted in the outer tube, described outer
Casting space is formed between casing and the inner sleeve；
Rigid tubular pole has poured concrete in the casting space to form the rigid tubular pole；And
Flexible pile core, filled with filler to form the flexible pile core in the inner sleeve.
2. combination of rigidity and flexibility stake according to claim 1, which is characterized in that the filler is rubble.
3. combination of rigidity and flexibility stake according to claim 1, which is characterized in that the wall thickness and the rigid pipe of the rigidity tubular pole
The ratio between internal diameter of stake is 1:1~4.
4. combination of rigidity and flexibility stake according to claim 3, which is characterized in that the wall thickness and the rigid pipe of the rigidity tubular pole
The ratio between internal diameter of stake is 3:5.
5. a kind of construction method of combination of rigidity and flexibility stake, which comprises the following steps:
Shoe is provided, the shoe is directed at downwards ground；
Outer tube is provided, the outer tube is sheathed in the shoe；
Inner sleeve is provided, the inner sleeve is inserted in the outer tube, so that between the outer tube and the inner sleeve
Form casting space；
Outer tube described in vibration-sunk and the inner sleeve are to projected depth；
In casting concrete in the casting space to form rigid tubular pole, filler is filled in Yu Suoshu inner sleeve to form flexibility
Stake core；
The outer tube and the inner sleeve are extracted in vibration.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910021759.0A CN109577307A (en) | 2019-01-10 | 2019-01-10 | Combination of rigidity and flexibility stake and its construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910021759.0A CN109577307A (en) | 2019-01-10 | 2019-01-10 | Combination of rigidity and flexibility stake and its construction method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109577307A true CN109577307A (en) | 2019-04-05 |
Family
ID=65916470
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910021759.0A Pending CN109577307A (en) | 2019-01-10 | 2019-01-10 | Combination of rigidity and flexibility stake and its construction method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109577307A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113550303A (en) * | 2021-07-28 | 2021-10-26 | 建材桂林地质工程勘察院有限公司 | Pile forming method for down-the-hole impact high-pressure jet grouting composite pile |
| CN114351692A (en) * | 2022-01-26 | 2022-04-15 | 江苏省海洋资源开发研究院(连云港) | Composite stiffness core pile for reinforcing soft soil and forming method |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1367296A (en) * | 2002-01-14 | 2002-09-04 | 河海大学 | Soft foundation composite ground base construction method for field pouring pipe pile with large diameter |
| US20060147274A1 (en) * | 2004-11-12 | 2006-07-06 | Jinliang Ding | Construction process for composite pile foundation |
| KR20100086146A (en) * | 2009-01-22 | 2010-07-30 | 이엑스티 주식회사 | Construction method for composite pile using digging and hardenning |
| CN104060522A (en) * | 2014-06-28 | 2014-09-24 | 福州大学 | Integrated seamless abutment bridge applying double-layer flexible concrete-filled steel tube pile |
| CN104179166A (en) * | 2014-08-22 | 2014-12-03 | 中国建筑西南勘察设计研究院有限公司 | Rigid pile composite foundation and construction method thereof |
| CN107012861A (en) * | 2017-03-21 | 2017-08-04 | 重庆大学 | A kind of discrete material core expansive concrete stake and its construction method |
| JP2017150287A (en) * | 2016-02-26 | 2017-08-31 | 一般社団法人グラベルウッドパイル協会 | Excavation member and ground improvement method using the same |
| CN209636780U (en) * | 2019-01-10 | 2019-11-15 | 上海市市政规划设计研究院有限公司 | Composite pile |
-
2019
- 2019-01-10 CN CN201910021759.0A patent/CN109577307A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1367296A (en) * | 2002-01-14 | 2002-09-04 | 河海大学 | Soft foundation composite ground base construction method for field pouring pipe pile with large diameter |
| US20060147274A1 (en) * | 2004-11-12 | 2006-07-06 | Jinliang Ding | Construction process for composite pile foundation |
| KR20100086146A (en) * | 2009-01-22 | 2010-07-30 | 이엑스티 주식회사 | Construction method for composite pile using digging and hardenning |
| CN104060522A (en) * | 2014-06-28 | 2014-09-24 | 福州大学 | Integrated seamless abutment bridge applying double-layer flexible concrete-filled steel tube pile |
| CN104179166A (en) * | 2014-08-22 | 2014-12-03 | 中国建筑西南勘察设计研究院有限公司 | Rigid pile composite foundation and construction method thereof |
| JP2017150287A (en) * | 2016-02-26 | 2017-08-31 | 一般社団法人グラベルウッドパイル協会 | Excavation member and ground improvement method using the same |
| CN107012861A (en) * | 2017-03-21 | 2017-08-04 | 重庆大学 | A kind of discrete material core expansive concrete stake and its construction method |
| CN209636780U (en) * | 2019-01-10 | 2019-11-15 | 上海市市政规划设计研究院有限公司 | Composite pile |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113550303A (en) * | 2021-07-28 | 2021-10-26 | 建材桂林地质工程勘察院有限公司 | Pile forming method for down-the-hole impact high-pressure jet grouting composite pile |
| CN114351692A (en) * | 2022-01-26 | 2022-04-15 | 江苏省海洋资源开发研究院(连云港) | Composite stiffness core pile for reinforcing soft soil and forming method |
| CN114351692B (en) * | 2022-01-26 | 2023-08-18 | 江苏海洋大学 | Composite stiffening core pile for soft soil reinforcement and forming mode |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103074891B (en) | Double-layer plastic sleeve bulk material and concrete stiffness core composite pile and construction method thereof | |
| CN104278608B (en) | The constructional method of a kind of highway embankment widened structure | |
| CN103526770B (en) | A kind of construction method of high antiseepage anti-floating pile raft structure | |
| CN102767173B (en) | High polymer material slurry filled discrete material pile composite foundation and construction method thereof | |
| CN107503257B (en) | One kind being close to mountain high-filled subgrade stabilization and Deformation control structure and construction method | |
| CN103334357B (en) | Viaduct road embankment structure with lower pile foundation bearing platform extending in roadbed, and construction method | |
| CN105332380B (en) | Strut changing structure and method for underground building | |
| CN106677154A (en) | Collapsible loess foundation rubble frame structure reinforcement system and reinforcement method | |
| CN103074882A (en) | Construction method for reinforcing island-type perennial frozen-soil foundation by adopting gravel piles | |
| CN106013171A (en) | Semi-rigid and semi-flexible support structure and method for deep foundation pit side wall | |
| CN105672450A (en) | Laying method for large-aperture water draining pipeline parallel to upper part of existing metro tunnel structure | |
| CN104480956B (en) | A kind of minor diameter mold-bagged concrete pile composite foundation | |
| CN103437336A (en) | PVC hole-pipe gravel pile and soft foundation processing method thereof | |
| CN109577307A (en) | Combination of rigidity and flexibility stake and its construction method | |
| CN203334154U (en) | Embankment structure for preventing bearing platform of pile foundation from stretching in roadbed under viaduct | |
| CN109252542B (en) | Tree root pile light retaining wall for road widening and construction method thereof | |
| CN111379253A (en) | Construction method for high-speed railway expanded cement slurry post-grouting discrete material pile composite foundation | |
| CN104695417B (en) | A kind of manufacture method of grouting behind shaft or drift lining broken stone pile | |
| CN209636780U (en) | Composite pile | |
| CN105804101A (en) | Load-reducing retaining system capable of reducing stress of retaining structure, construction method and applications | |
| CN103966996A (en) | Gravel pile and manufacturing method thereof | |
| CN111254909B (en) | Construction process of composite pile foundation of soft soil area foundation | |
| CN203066064U (en) | Double-layer plastic sleeve discrete material and concrete stiffening core combined pile | |
| CN107299644A (en) | A kind of pile anchor rod basis available for soft clay area | |
| CN106245641A (en) | PHC pile tube post grouting construction technique and PHC pile tube composite pile |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20190405 |
|
| WD01 | Invention patent application deemed withdrawn after publication |