CN111764404A - Partially recyclable secant pile supporting structure and construction method - Google Patents
Partially recyclable secant pile supporting structure and construction method Download PDFInfo
- Publication number
- CN111764404A CN111764404A CN202010710746.7A CN202010710746A CN111764404A CN 111764404 A CN111764404 A CN 111764404A CN 202010710746 A CN202010710746 A CN 202010710746A CN 111764404 A CN111764404 A CN 111764404A
- Authority
- CN
- China
- Prior art keywords
- pile
- fine sand
- wall
- plain concrete
- cylinder
- 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 34
- 239000004567 concrete Substances 0.000 claims abstract description 61
- 239000004576 sand Substances 0.000 claims abstract description 52
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 39
- 239000010959 steel Substances 0.000 claims abstract description 39
- 239000002689 soil Substances 0.000 claims abstract description 13
- 239000011083 cement mortar Substances 0.000 claims description 14
- 239000003795 chemical substances by application Substances 0.000 claims description 6
- 239000004568 cement Substances 0.000 claims description 4
- 239000011398 Portland cement Substances 0.000 claims description 3
- 230000003014 reinforcing effect Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 claims 4
- 238000005452 bending Methods 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000004064 recycling Methods 0.000 abstract 1
- 239000011150 reinforced concrete Substances 0.000 description 7
- 239000002002 slurry Substances 0.000 description 6
- 238000009412 basement excavation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000003776 cleavage reaction Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 230000007017 scission Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/02—Foundation pits
- E02D17/04—Bordering surfacing or stiffening the sides of foundation pits
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
- E02D5/24—Prefabricated piles
- E02D5/28—Prefabricated piles made of steel or other metals
- E02D5/285—Prefabricated piles made of steel or other metals tubular, e.g. prefabricated from sheet pile elements
-
- 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
- E02D5/44—Concrete or concrete-like piles cast in position ; Apparatus for making same making by use of mould-pipes or other moulds with enlarged footing or enlargements at the bottom of the pile
Landscapes
- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Bulkheads Adapted To Foundation Construction (AREA)
Abstract
The invention discloses a partially recyclable secant pile supporting structure and a construction method, wherein the secant pile supporting structure comprises a plurality of steel pipe piles and a plurality of medium-fine sand plain concrete thin-wall pipe piles; the centers of the plurality of steel pipe piles and the plurality of medium fine sand plain concrete thin-wall pipe piles are positioned on the same straight line; a gap is reserved between two adjacent medium fine sand plain concrete thin-wall pipe piles, and the two adjacent medium fine sand plain concrete thin-wall pipe piles are respectively occluded with the same steel pipe pile; the pile end of the medium fine sand plain concrete thin-wall pipe pile extends into the waterproof layer, and the length of the steel pipe pile is not less than that of the medium fine sand plain concrete thin-wall pipe pile. Compared with the existing secant pile supporting structure, the invention has the advantages of high construction speed, capability of recycling the steel pipe pile and reducing the production cost, good water stopping effect and large integral bending rigidity, and is particularly suitable for deep foundation pit supporting engineering of soft soil foundation.
Description
Technical Field
The invention belongs to the technical field of secant piles, and particularly relates to a partially recyclable secant pile supporting structure and a construction method.
Background
The secant pile is a foundation pit support structure formed by a plurality of sequentially and alternately arranged plain concrete piles and reinforced concrete piles, wherein the plain concrete piles are formed by concrete, the reinforced concrete piles are formed by a reinforcement framework and concrete, and adjacent plain concrete piles and the reinforced concrete piles are mutually secant, so that the effects of retaining soil and stopping water are achieved.
The construction sequence of the secant pile is that two plain concrete piles are constructed firstly, then a reinforced concrete pile is constructed between the two constructed plain concrete piles, when the reinforced concrete pile is constructed, the concrete of the secant overlapped part of the two plain concrete piles and the reinforced concrete pile is dug out so as to realize the function of mutual secant, thus the engineering quantity is increased objectively and the waste of concrete materials is caused.
In addition, no matter be plain concrete pile or reinforced concrete pile, when being under the groundwater level or in soft soil or the sandy soil layer construction, all need adopt mud dado in order to prevent the pore wall and collapse, not only construction speed is slow, and mud post processing is difficult moreover, does not handle direct discharge and still can the polluted environment.
Disclosure of Invention
In order to solve the technical problems, the invention provides a partially recyclable secant pile supporting structure and a construction method, wherein the secant pile supporting structure is simple in structure, simple and rapid in construction, low in cost, free of digging and removing concrete of a plain concrete pile and free of a mud retaining wall.
The technical scheme adopted by the invention is as follows: a partially recyclable secant pile supporting structure comprises a plurality of steel pipe piles and a plurality of medium fine sand plain concrete thin-wall pipe piles; the centers of the plurality of steel pipe piles and the plurality of medium fine sand plain concrete thin-wall pipe piles are positioned on the same straight line; a gap is reserved between two adjacent medium fine sand plain concrete thin-wall pipe piles, and the two adjacent medium fine sand plain concrete thin-wall pipe piles are respectively occluded with the same steel pipe pile; the pile end of the medium fine sand plain concrete thin-wall pipe pile extends into the waterproof layer, and the length of the steel pipe pile is not less than that of the medium fine sand plain concrete thin-wall pipe pile.
In the above partially recyclable secant pile supporting structure, the outer diameter of the steel pipe pile is the same as that of the medium-fine sand plain concrete thin-wall pipe pile.
The construction method of the partially recyclable secant pile supporting structure comprises the following steps that construction equipment of the medium-fine sand concrete thin-wall tubular pile comprises a cylinder, wherein two grouting pipes are symmetrically arranged on the inner wall of the cylinder and are arranged along the axis of the cylinder; the inner wall of the bottom of the cylinder is fixedly provided with an annular pipe, the sections of the lower part and the upper part of the annular pipe are wedge-shaped, so that the cylinder can be sunk and pulled conveniently; the outer wall of the annular pipe is a cylindrical surface, is coaxial with the cylinder and has the same outer diameter as the inner diameter of the cylinder; the section of the annular pipe is an isosceles triangle, and the bottom edge of the isosceles triangle is the outer wall of the annular pipe; the pulp outlet is arranged on the lower waist of the isosceles triangle;
comprises the following steps
1) Determining grouting amount, grouting pressure and tube drawing speed through pile testing;
2) determining the pile position to enable the construction equipment of the pile machine and the medium fine sand plain concrete thin-wall pipe pile to be in place;
2) starting the pile machine, vibrating and sinking the cylinder to the designed depth, then injecting cement mortar into one grouting pipe, wherein the grouting pressure is the self-weight stress of the soil body at the pile end, and waiting until cement mortar flows out from the other grouting pipe; then, cement mortar is simultaneously injected into the two grouting hoses; at the moment, the grouting pressure is 5-10 times of the self-weight stress of the soil body at the pile end, and the grouting is carried out for 3-5 minutes; so that cement mortar is diffused to soil adjacent to the cylinder end through high-pressure permeation or splitting grouting to form an expanded head reinforcing body;
3) using a pile machine to vibrate and pull out the cylinder, grouting according to the designed grouting pressure while pulling out the cylinder, and keeping the grouting pressure and the speed of pulling out the cylinder unchanged;
4) moving the next pile position to repeat the steps 2) -3) to get the next medium fine sand plain concrete thin-wall pipe pile,
5) hoisting a large-diameter prefabricated steel pipe pile in place at a pile position where two well-drilled fine sand plain concrete thin-wall pipe piles are occluded, starting a vibrating hammer of a pile machine, and sinking the steel pipe pile to a designed depth;
6) repeating the steps 4) -5) until all the medium-fine sand plain concrete thin-wall tubular piles and the steel pipe piles are driven;
in the construction method of the partially recyclable secant pile support structure, the top of the cylinder of the construction equipment is provided with the cover plate.
In the construction method of the partially recyclable secant pile supporting structure, the sand in the cement mortar is medium-fine sand, and the cement is ordinary portland cement marked with P.O 42.5.5.
In the construction method of the partially recyclable secant pile support structure, the release agent or the release agent is coated on the inner surface and the outer surface of the steel pipe pile before the steel pipe pile is driven.
Compared with the prior art, the invention has the beneficial effects that:
1. the plain concrete which is formed by interlocking and overlapping the first-constructed medium-fine sand plain concrete thin-wall pipe pile and the later-constructed steel pipe pile does not need to be dug out, the construction is convenient, and the construction speed is improved; this part is also advantageous for the bending stiffness of the bite pile support structure;
2. the secant pile supporting structure has high construction speed, and the construction time of one pile is about 30 minutes on average, which is more than ten times of the construction speed of the conventional secant pile;
3. the invention does not need a mud retaining wall when piling, thereby avoiding the treatment of mud in the later period and further improving the construction speed;
4. the invention adopts the pre-grouting technology to form the pile end expanded head before pulling out the cylinder, and adopts the mode of pulling out the cylinder and grouting at the same time to form the pile, the gap left by pulling out the cylinder can be quickly filled with grouting liquid in excess under the grouting pressure which is several times higher than the dead weight stress of the position, and the pile forming quality is high;
5. the steel pipe pile used in the invention can be recycled and reused after the use of the occlusive pile is finished, and the consumption of concrete of the medium-fine sand plain concrete thin-wall pipe pile is small, thereby reducing the production cost.
6. The occlusive pile produced by the invention has the advantages of high bending rigidity, strong anti-overturning capability and good double-layer water stopping effect. Compared with the secant pile in the prior art, the quality is more reliable, and the safety and the stability are good.
Drawings
Fig. 1 is a structural view of construction equipment for a medium fine sand concrete thin-wall pipe pile according to the present invention.
Fig. 2 is a top view of the construction equipment of the medium-fine sand concrete thin-wall pipe pile of the present invention.
Fig. 3 is a bottom view of the construction equipment of the medium fine sand plain concrete thin-wall pipe pile of the present invention.
Figure 4 is a top plan view of a partially recyclable bite pile support structure of the present invention.
FIG. 5 is a cross-sectional view of the interior wall A-A of the foundation pit of FIG. 4 after excavation to an O-O elevation.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
As shown in fig. 4 to 5, the partially recyclable secant pile support structure of the present invention includes a plurality of steel pipe piles 7 and a plurality of medium fine sand concrete thin-walled pipe piles 6; the outer diameter of the steel pipe pile 7 is the same as that of the medium-fine sand plain concrete thin-wall pipe pile 6. The centers of the plurality of steel pipe piles 7 and the plurality of medium fine sand plain concrete thin-wall pipe piles 6 are positioned on the same straight line; and a gap is reserved between two adjacent middle fine sand plain concrete thin-wall tubular piles 6, and the two middle fine sand plain concrete thin-wall tubular piles are respectively occluded with the same steel pipe pile 7.
As shown in figures 1-3, the construction equipment for the medium-fine sand concrete thin-wall tubular pile 6 comprises a cylinder 4 and two grouting pipes 3, wherein the diameter of the cylinder 4 is 1.0-4.0 m, the length of the cylinder 4 is 10.0-30.0 m, and the cylinder 4 is made of steel. The top of the cylinder is provided with a cover plate 2, and a vibration hammer 1 of the pile machine transmits exciting force to a round steel cylinder 4 through the cover plate 2 to enable the round steel cylinder to sink.
Two grouting pipes 3 are symmetrically welded on the inner wall of the cylinder 4, and the grouting pipes 3 are arranged along the axis of the cylinder. The inner wall of the bottom of the cylinder 4 is welded with an annular pipe 5, the section of the annular pipe 5 is an isosceles triangle, the outer wall of the annular pipe is a cylindrical surface, and the bottom edge of the isosceles triangle is a cylindrical surface. The outer diameter of the annular tube is the same as the inner diameter of the cylinder 4 and the annular tube 5 is coaxial with the cylinder 4. The section of the annular pipe 5 is composed of an upper wedge-shaped structure and a lower wedge-shaped structure, so that the cylinder can be sunk and pulled out conveniently. The top of the annular pipe 5 is provided with two slurry inlets which are respectively connected with the lower ends of the two grouting pipes 3; the lower waist of the isosceles triangle of the section of the annular pipe 5 is provided with a plurality of slurry outlets in the shape of circular holes, and the slurry outlets and the slurry inlets are communicated with each other through the annular pipe 5. The distance between the slurry outlets of the adjacent circular holes is 100 mm and 200 mm; the diameter of the pulp outlet of the circular hole is 5-8 mm. The height of the isosceles triangle of the section of the annular pipe 5 is 10.0-15.0 cm.
The construction method of the partially recyclable secant pile supporting structure comprises the following steps:
1) preparation work: A. and (3) coating an isolating agent or a release agent on the inner surface and the outer surface of the steel pipe pile 6, so that the steel pipe pile 7 can be conveniently recycled. B. And determining grouting amount, grouting pressure and tube drawing speed through pile testing. C. And determining the pile position, so that the construction equipment of the pile machine and the medium fine sand plain concrete thin-wall tubular pile 6 is in place.
2) Starting a vibration hammer, vibrating and sinking the cylinder 1 to a designed depth, then starting to inject cement mortar into one grouting pipe 3, taking the self-weight stress of a soil body at the pile end by grouting pressure, and simultaneously injecting the cement mortar into two grouting hoses after the cement mortar flows out of the other grouting pipe; keeping a larger grouting pressure for 3-5 minutes, wherein the grouting pressure is 5-10 times of the self-weight stress of the soil body at the pile end, and allowing cement slurry to diffuse to the adjacent soil at the cylinder end through high-pressure permeation or cleavage grouting to form an expanded head reinforcing body; the sand in the cement mortar adopts medium-fine sand, and the cement adopts ordinary Portland cement marked with P.O 42.5.5.
3) Using a pile machine to vibrate and pull out the cylinder, grouting according to the designed grouting pressure while pulling out the cylinder, and keeping the grouting pressure and the speed of pulling out the cylinder unchanged until the medium-fine sand concrete thin-wall tubular pile 6 forms a pile;
4) moving the next pile position to repeat the steps 2) -3) to get the next medium fine sand plain concrete thin-wall tubular pile 6,
5) hoisting a large-diameter prefabricated steel pipe pile 7 in place at the pile position where two medium-fine sand plain concrete thin-wall tubular piles 6 which are well drilled are occluded with each other, starting a pile machine vibration hammer, and sinking the steel pipe pile 7 to the designed depth;
6) and repeating the steps 4) -5) until all the medium fine sand plain concrete thin-wall tubular piles 6 and the steel pipe piles 7 are driven.
Claims (6)
1. The utility model provides a partly recoverable secant pile supporting construction, characterized by: the pile comprises a plurality of steel pipe piles and a plurality of medium fine sand plain concrete thin-wall pipe piles; the centers of the plurality of steel pipe piles and the plurality of medium fine sand plain concrete thin-wall pipe piles are positioned on the same straight line; a gap is reserved between two adjacent medium fine sand plain concrete thin-wall pipe piles, and the two adjacent medium fine sand plain concrete thin-wall pipe piles are respectively occluded with the same steel pipe pile; the pile end of the medium fine sand plain concrete thin-wall pipe pile extends into the waterproof layer, and the length of the steel pipe pile is not less than that of the medium fine sand plain concrete thin-wall pipe pile.
2. A partially recyclable secant pile support structure according to claim 1 wherein: the outer diameter of the steel pipe pile is the same as that of the medium-fine sand plain concrete thin-wall pipe pile.
3. A construction method of the partially recyclable secant pile support structure according to claim 1 or 2, wherein the construction equipment for the fine sand concrete thin-wall tubular pile comprises a cylinder, two grouting pipes are symmetrically arranged on the inner wall of the cylinder, and the grouting pipes are arranged along the axis of the cylinder; the inner wall of the bottom of the cylinder is fixedly provided with an annular pipe, the sections of the lower part and the upper part of the annular pipe are wedge-shaped, so that the cylinder can be sunk and pulled conveniently; the outer wall of the annular pipe is a cylindrical surface, is coaxial with the cylinder and has the same outer diameter as the inner diameter of the cylinder; the section of the annular pipe is an isosceles triangle, and the bottom edge of the isosceles triangle is the outer wall of the annular pipe; the pulp outlet is arranged on the lower waist of the isosceles triangle;
the method comprises the following steps:
1) determining grouting amount, grouting pressure and tube drawing speed through pile testing;
2) determining the pile position to enable the construction equipment of the pile machine and the medium fine sand plain concrete thin-wall pipe pile to be in place;
2) starting the pile machine, vibrating and sinking the cylinder to the designed depth, then injecting cement mortar into one grouting pipe, wherein the grouting pressure is the self-weight stress of the soil body at the pile end, and waiting until cement mortar flows out from the other grouting pipe; then, cement mortar is simultaneously injected into the two grouting hoses; at the moment, the grouting pressure is 5-10 times of the self-weight stress of the soil body at the pile end, and the grouting is carried out for 3-5 minutes; so that cement mortar is diffused to soil adjacent to the cylinder end through high-pressure permeation or splitting grouting to form an expanded head reinforcing body;
3) using a pile machine to vibrate and pull out the cylinder, grouting according to the designed grouting pressure while pulling out the cylinder, and keeping the grouting pressure and the speed of pulling out the cylinder unchanged;
4) moving the next pile position to repeat the steps 2) -3) to get the next medium fine sand plain concrete thin-wall pipe pile,
5) hoisting the steel pipe pile in place at the pile position where two middle fine sand plain concrete thin-wall pipe piles are engaged, starting a vibration hammer of a pile machine, and sinking the steel pipe pile to the designed depth;
6) and repeating the steps 4) -5) until all the medium-fine sand plain concrete thin-wall tubular piles and the steel pipe piles are driven to form the secant pile-wall supporting structure.
4. A method of constructing a partially recyclable secant pile support structure according to claim 3, wherein: the top of the cylinder of the construction equipment is provided with a cover plate.
5. A method of constructing a partially recyclable secant pile support structure according to claim 3, wherein: the sand in the cement mortar adopts medium-fine sand, and the cement adopts ordinary Portland cement marked with P.O 42.5.5.
6. A method of constructing a partially recyclable secant pile support structure according to claim 3, wherein: before driving the steel pipe pile, a release agent or a release agent is coated on the inner surface and the outer surface of the steel pipe pile.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010710746.7A CN111764404A (en) | 2020-07-22 | 2020-07-22 | Partially recyclable secant pile supporting structure and construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010710746.7A CN111764404A (en) | 2020-07-22 | 2020-07-22 | Partially recyclable secant pile supporting structure and construction method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111764404A true CN111764404A (en) | 2020-10-13 |
Family
ID=72728712
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010710746.7A Pending CN111764404A (en) | 2020-07-22 | 2020-07-22 | Partially recyclable secant pile supporting structure and construction method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111764404A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112144517A (en) * | 2020-10-16 | 2020-12-29 | 中铁十五局集团第五工程有限公司 | Method for grouting retaining wall by using steel retaining cylinder for pile foundation in weak stratum |
| CN114606953A (en) * | 2022-01-11 | 2022-06-10 | 索泰克(北京)岩土科技有限公司 | Recoverable H-shaped steel and corresponding supporting structure |
| CN114892700A (en) * | 2022-03-23 | 2022-08-12 | 中交(寿光)投资有限公司 | Tidal barrier composite foundation structure for sea-bound weak foundation and construction method of tidal barrier composite foundation structure |
| CN115059090A (en) * | 2022-06-29 | 2022-09-16 | 浙江大学 | Micro-disturbance combined foundation pit supporting wall and construction method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20050092144A (en) * | 2004-03-15 | 2005-09-21 | 이은숙 | Arch steel pipe sheet piles use of arching effect and its wall |
| CN202559361U (en) * | 2012-04-09 | 2012-11-28 | 东南大学 | Precast high strength concrete thin-wall steel pipe pile foundation pit supporting structure |
| CN106894425A (en) * | 2017-03-11 | 2017-06-27 | 窦春晓 | A kind of conjuncted CS pile tubes foundation pit supporting construction of major diameter and its construction method |
| CN210288408U (en) * | 2019-04-01 | 2020-04-10 | 宁波冶金勘察设计研究股份有限公司 | Foundation pit supporting structure |
| CN212506303U (en) * | 2020-07-22 | 2021-02-09 | 湖南科技学院 | Partially recyclable secant pile supporting structure |
-
2020
- 2020-07-22 CN CN202010710746.7A patent/CN111764404A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20050092144A (en) * | 2004-03-15 | 2005-09-21 | 이은숙 | Arch steel pipe sheet piles use of arching effect and its wall |
| CN202559361U (en) * | 2012-04-09 | 2012-11-28 | 东南大学 | Precast high strength concrete thin-wall steel pipe pile foundation pit supporting structure |
| CN106894425A (en) * | 2017-03-11 | 2017-06-27 | 窦春晓 | A kind of conjuncted CS pile tubes foundation pit supporting construction of major diameter and its construction method |
| CN210288408U (en) * | 2019-04-01 | 2020-04-10 | 宁波冶金勘察设计研究股份有限公司 | Foundation pit supporting structure |
| CN212506303U (en) * | 2020-07-22 | 2021-02-09 | 湖南科技学院 | Partially recyclable secant pile supporting structure |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112144517A (en) * | 2020-10-16 | 2020-12-29 | 中铁十五局集团第五工程有限公司 | Method for grouting retaining wall by using steel retaining cylinder for pile foundation in weak stratum |
| CN114606953A (en) * | 2022-01-11 | 2022-06-10 | 索泰克(北京)岩土科技有限公司 | Recoverable H-shaped steel and corresponding supporting structure |
| CN114606953B (en) * | 2022-01-11 | 2024-04-09 | 索泰克(北京)岩土科技有限公司 | Recoverable H-shaped steel and corresponding supporting structure |
| CN114892700A (en) * | 2022-03-23 | 2022-08-12 | 中交(寿光)投资有限公司 | Tidal barrier composite foundation structure for sea-bound weak foundation and construction method of tidal barrier composite foundation structure |
| CN115059090A (en) * | 2022-06-29 | 2022-09-16 | 浙江大学 | Micro-disturbance combined foundation pit supporting wall and construction method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111764404A (en) | Partially recyclable secant pile supporting structure and construction method | |
| CN105780763B (en) | Mesoporous vibrates the construction method of casing retaining wall long auger guncreting pile | |
| CN102011399B (en) | PHC pile-based multiple high jet pedestal pile construction method | |
| CN101255691B (en) | Construction method for complete casing tube thin wall filling pile and movable internal mold | |
| CN102383431A (en) | Sinking device and novel sinking method of center dug prestressed centrifuge pipe pile (square pile) | |
| CN103161155A (en) | Pile machine special for immersed tube pressure filling pile, using method thereof and application thereof | |
| CN1488818A (en) | Jacketed disc pile and piling method, extruding-expanding device, pile sinking machine and use | |
| CN212248222U (en) | Construction equipment for grouting thin-wall tubular pile | |
| CN212506303U (en) | Partially recyclable secant pile supporting structure | |
| CN111636420A (en) | Construction equipment and construction method of anti-necking sinking pipe cast-in-place pile | |
| CN105926594A (en) | Double-pipe construction method for static pressure pipe-sinking carrier cast-in-place pile | |
| JP3242356U (en) | Composite pile foundation structure to fix the quicksand layer | |
| CN201021495Y (en) | Vibration machine for plasm injection construction of sand earth foundation | |
| CN212316905U (en) | Construction equipment of anti-necking immersed tube bored concrete pile | |
| CN102031780A (en) | Water flushing construction method of static tubular pile of sand pile tip | |
| CN111364454A (en) | Construction method of variable cross-section composite pile | |
| CN110258504A (en) | It is a kind of to carry out the sinking tube compacted pile constructing process that bottom is rammed using built-in hammer ram | |
| CN111636419A (en) | Construction equipment and construction method for grouting thin-wall tubular pile | |
| CN103132511A (en) | Pile-forming method and pile-forming device for static pressure immersed tube expanded-base cast-in-place pile | |
| CN217027192U (en) | Marine anchoring barrel basis | |
| CN216428281U (en) | Thin-wall concrete steel pipe combined support pile | |
| CN215443942U (en) | Auxiliary device for cutting deep quicksand layer | |
| CN208668417U (en) | A kind of steel sheet pile inserting piling auxiliary water shovel structure | |
| CN206220080U (en) | Fore shaft grouting steel tube pile guide wall | |
| CN219240525U (en) | Maintenance and stability system for bored pile construction |
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 |