CN105350514B - A kind of scalable excess pore water dissipation sleeve pipe and its construction method - Google Patents
A kind of scalable excess pore water dissipation sleeve pipe and its construction method Download PDFInfo
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- CN105350514B CN105350514B CN201510786444.7A CN201510786444A CN105350514B CN 105350514 B CN105350514 B CN 105350514B CN 201510786444 A CN201510786444 A CN 201510786444A CN 105350514 B CN105350514 B CN 105350514B
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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
- E02D3/103—Improving by compacting by watering, draining, de-aerating or blasting, e.g. by installing sand or wick drains by installing wick drains or sand bags
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- Engineering & Computer Science (AREA)
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- Agronomy & Crop Science (AREA)
- Environmental & Geological Engineering (AREA)
- Soil Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The invention discloses a kind of scalable excess pore water dissipation sleeve pipe and its construction method, scalable excess pore water dissipation sleeve pipe includes the sleeve pipe that the more piece for arranging from inside to outside connects together, several inlet openings are set on the tube wall of sleeve pipe, the bottom of the sleeve pipe of innermost layer arranges chassis, hollow pipe is set on chassis, and the bottom on chassis arranges rotating vane；Construction method is comprised the following steps, and sets drilling in place；Assembling sleeve pipe；The sleeve rotating for assembling is entered in drilling；Laying ground heap carrier layer；The top of hollow pipe is connected with water pump, pumping for water pump is opened；Casing recovery.The scalable excess pore water dissipation sleeve pipe of the present invention can be used for prepressing water discharge consolidation process ground, form Quick drainage passage, optimize vertical drainage system, promote excess pore water from level to inflow dissipation sleeve pipe, greatly shorten the soil solidifying time, and the joint number of sleeve pipe arbitrarily can be set, it is simple and convenient；Construction terminates rear sleeve recoverable, economizes on resources；Construction method is simple and convenient.
Description
Technical field
The invention mainly relates to the prepressing water discharge concretion technology field in field of foundation treatment, specifically a kind of scalable super
Pore water dissipation sleeve pipe and its construction method.
Background technology
With China's rapid development of economy, coastal area capital construction has obtained the development maked rapid progress, on China edge
Haiti area has built substantial amounts of Factory Building, harbour, airport, harbour etc., but the natural excellent ground directly utilized without process
Seldom, many buildings have to be built on soft foundation.China's Coastal Areas it is widely distributed marine deposit weakness stick
Soil layer, on this marine deposit weakness clay, this native low intensity, compressibility are big, water penetration for many building constructions at present
Difference, can produce very big sedimentation and differential settlement under building load, and the sedimentation time is longer, so as to just affect building
Often use.Additionally, the shortcomings of marine facies weakness clay layer has foundation bearing capacity and inadequate stability as foundation soil, it is impossible to meet
Engine request.Therefore generally need to take treatment measures, pre-pressure drainage consolidation method be process this foundation soil effective ways it
One.
Requirement of the different buildings to ground is different, before method for processing foundation is selected must according to the foundation character, when
The ground factor such as experience and economical rationality carrys out reasonable selection effective treating method.Pre-pressure drainage consolidation method is used as method for processing foundation
One kind, is mainly used in the low weak soil of permeability, is acted on by the precompressed of load, a part of water in hole is slowly extruded,
The void ratio of soil reduces, with the purpose for reaching gain in strength and eliminating part deformation.Prepressing water discharge consolidation is built in building
Before making, ground on the scene carries out loading precompressed, and in making the soil body, part pore water is gradually discharged, ground consolidation, and soil strength is gradually
Improve.According to consolidation theory, when Soft Soil Layer is very thick, consolidation process needs to optimize Brainage boundary condition, and engineering is conventional by sand drain or modeling
Vertical drainage system and the transverse drainage system being made up of sand bedding course that material draining board is constituted, promote hole under load action
Water flows into sand drain by horizontal direction, is substantially shorter consolidation time.As in engineering, sand drainage construction step sequence is slower, especially in marine facies
In the weak clay layer of deposition, in preconsolidation construction, the duration is longer.Can produce in prepressing water discharge work progress a certain amount of super
Pore water, the presence of excess pore water can affect the stability of ground, how optimize vertical drainage system under the conditions of such, effectively
Excess pore water is discharged, dissipation excess pore water pressure accelerates soil solidifying, actually significant to engineering.
The content of the invention
In order to solve deficiency of the prior art, the invention provides a kind of scalable excess pore water dissipation sleeve pipe and its applying
Work method, scalable excess pore water dissipation sleeve pipe can arbitrarily arrange the joint number of sleeve pipe according to drilling depth, simple and convenient；Precompressed
Discharging consolidation construction can also be reclaimed to sleeve pipe after terminating, and reused, saved resource；Scalable excess pore water dissipates
Sleeve pipe can be used for the weak clay layer place of prepressing water discharge consolidation process marine deposit, forms Quick drainage passage, optimizes work
The vertical drainage system of Cheng Changyong, promotes excess pore water from level to dissipation sleeve pipe is flowed into, substantially reduces the soil solidifying time,
And the construction method that carried out using scalable excess pore water dissipation sleeve pipe is simple and convenient.
The present invention for achieving the above object, is achieved through the following technical solutions：
A kind of scalable excess pore water dissipation sleeve pipe, including the sleeve pipe that the more piece for arranging from inside to outside connects together, institute
State, the upper end of the sleeve pipe of internal layer is located in two adjacent sleeve pipes and outer layer is located at
Sleeve pipe lower end connection, the bottom of the sleeve pipe of innermost layer arranges chassis, hollow pipe arranged on the chassis, and the hollow pipe is
Multistage setting, is tightly connected between two adjacent hollow pipes, and the hollow pipe is provided with water inlet near the one end on chassis, described
The bottom on chassis arranges rotating vane.
By positioned at the external screw thread that arranges on the sleeve pipe of internal layer and on the sleeve pipe of outer layer between two adjacent sleeve pipes
The female thread connection of setting.
The top of the sleeve pipe of top arranges thimble plug, and the centrally disposed through hole of described sleeve pipe plug, the hollow pipe are passed through
Through hole simultaneously exposes to the top of sleeve pipe.
Described sleeve pipe is truncated cone-shaped structure, and the diameter of described sleeve pipe is gradually reduced from top to bottom.
The rotating vane is welded with chassis.
A kind of construction method of scalable excess pore water dissipation sleeve pipe, comprises the following steps：
1) drilling is set in place；
2) the flexible joint number of sleeve pipe is set, sleeve pipe is assembled；
3) by step 2) sleeve pipe that assembles is put into step 1) drilling in, in revoling tube press-in foundation soil body；
4) ground heap carrier layer is laid after sleeve pipe is installed；
5) top of hollow pipe is connected with water pump, opens pumping for water pump, repetition is drawn water for several times, until prepressing water discharge is consolidated
Complete；
6) by casing recovery.
Step 1) in drilling be in quincuncial arrangement, the spacing of wells is 2m.
Prior art is contrasted, beneficial effect of the present invention is：
1st, scalable excess pore water dissipation sleeve pipe can arbitrarily arrange the joint number of sleeve pipe according to drilling depth, simple and convenient；
Prepressing water discharge consolidation construction can also be reclaimed to sleeve pipe after terminating, and reused, saved resource.
2nd, be threaded connection between two adjacent sleeve pipes, simple structure and be difficult loosen, rotation press-in sleeve pipe mistake
It is not in phenomenon sliding on sleeve pipe in journey.
3rd, thimble plug plays a part of fixed hollow pipe, prevents rocking for hollow pipe.
4th, the diameter of sleeve pipe from top to bottom diminishes successively, in facilitating the sleeve rotating press-in soil body.
5th, rotating vane and chassis welding, simple structure are connected firmly.
6th, scalable excess pore water dissipation sleeve pipe can be used for the weak clay layer field of prepressing water discharge consolidation process marine deposit
Ground, forms Quick drainage passage, optimizes the conventional vertical drainage system of engineering, promotes excess pore water to be dissipated from level to inflow
Sleeve pipe, substantially reduces the soil solidifying time, and the construction method carried out using scalable excess pore water dissipation sleeve pipe is simply square
Just.
7th, drilling is in quincuncial arrangement so that pipe is uniform to arrange, the uniform discharge of convenient super interstitial water, and the spacing of wells is
2m, spacing are suitable, can cause the discharge of super interstitial water more complete while drilling number is saved.
Description of the drawings
Accompanying drawing 1 is the structural representation of the present invention.
Accompanying drawing 2 is the structural representation of embodiment.
Accompanying drawing 3 is schematic diagram of the drilling in quincuncial arrangement.
Label shown in accompanying drawing：1st, sleeve pipe；2nd, inlet opening；3rd, chassis；4th, hollow pipe；5th, water inlet；6th, rotating vane；7、
Thimble plug；8th, through hole；9th, drill.
Specific embodiment
With reference to the drawings and specific embodiments, the invention will be further described.It should be understood that these embodiments are merely to illustrate
The present invention rather than restriction the scope of the present invention.In addition, it is to be understood that after the content for having read instruction of the present invention, this area
Technical staff can be made various changes or modifications to the present invention, and these equivalent form of values equally fall within the application appended claims
Limited range.
A kind of scalable excess pore water dissipation sleeve pipe, can apply to the process that weak Clayey Soil Ground place improves, bag
The sleeve pipe 1 that the more piece for arranging from inside to outside connects together is included, the joint number of sleeve pipe can be set according to the depth of drilling 9, simply
It is convenient so as to which that the discharging consolidation for being adapted to different grounds is processed.Several inlet openings 2 are set on the tube wall of described sleeve pipe 1 so that
Excess pore water in the soil body is by 2 sleeve pipe 1 of inlet opening.The upper end of the sleeve pipe of internal layer is located in two adjacent sleeve pipes 1
With the lower end connection of the sleeve pipe positioned at outer layer, the bottom of the sleeve pipe 1 of innermost layer arranges the sleeve pipe 1 on chassis 3, chassis 3 and innermost layer
Can be threaded connection.Hollow pipe 4 is set on the chassis 3, and the hollow pipe 4 is multistage setting, and adjacent two are hollow
It is tightly connected between pipe 4, the termination of two adjacent hollow pipes 4 can arrange female thread, is equipped with by two terminations outer
The connection tube head of screw thread is tightly connected, or the termination of two adjacent hollow pipes 4 can arrange external screw thread, is held by two
Head is all provided with female connection tube head and is tightly connected.The hollow pipe 4 is provided with water inlet 5, hollow pipe near the one end on chassis 3
4 top connection water pump, the excess pore water in sleeve pipe 1 are entered in hollow pipe 4, then by 4 top of hollow pipe by water inlet 5
Excess pore water is extracted out by the water pump of connection.The bottom on the chassis 3 arranges rotating vane 6, facilitates the rotation press-in soil body of sleeve pipe 1
In.
By being located at the external screw thread and the sleeve pipe 1 positioned at outer layer arrange on the sleeve pipe 1 of internal layer between two adjacent sleeve pipes 1
The female thread connection of upper setting, it is simple and convenient, it is connected firmly when in use, and convenient dismounting is placed after the completion of use.
The top of the sleeve pipe 1 of top arranges thimble plug 7, the centrally disposed through hole 8 of described sleeve pipe plug 7, the hollow pipe 4
Through through hole 8 and the top of sleeve pipe 1 is exposed to, thimble plug 7 can play a part of fixed hollow pipe 4, hollow pipe 4 be prevented in set
The damage for causing hollow pipe 4 is rocked in pipe 1, service life is improved.
Described sleeve pipe 1 is truncated cone-shaped structure, and the diameter of described sleeve pipe 1 is gradually reduced from top to bottom, facilitates the rotation of sleeve pipe 1
In the press-in soil body.
The rotating vane 6 is welded with chassis 3, simple structure and is connected firmly so that in the rotation press-in soil body of sleeve pipe 1
Middle rotating vane 6 is not easily disconnected from chassis 3.
A kind of construction method of scalable excess pore water dissipation sleeve pipe, comprises the following steps：
1) drilling 9 is set in place, while obtaining the parameters such as excess pore water depth；
2) according to step 1) in drilling 9 depth arrange sleeve pipe 1 flexible joint number, assemble sleeve pipe 1；
3) by step 2) sleeve pipe 1 that assembles is put into step 1) drilling 9 in, in the press-in foundation soil body of revoling tube 1；
4) ground heap carrier layer is laid after sleeve pipe 1 is installed；
5) top of hollow pipe 4 is connected with water pump, opens pumping for water pump, repetition is drawn water for several times, until prepressing water discharge is solid
Knot is completed；
6) sleeve pipe 1 is reclaimed.
Step 1) in drilling 9 be in quincuncial arrangement so that pipe is uniform to arrange, the uniform discharge of convenient super interstitial water, brill
9 spacing of hole is 2m, and spacing suitably, can be so that the discharge of super interstitial water be more complete while drilling number is saved.
Embodiment：
A kind of scalable excess pore water dissipation sleeve pipe, can apply to the process that weak Clayey Soil Ground place improves, bag
Include the sleeve pipe 1 that the more piece for arranging from inside to outside connects together, described sleeve pipe 1 is truncated cone-shaped structure, the diameter of described sleeve pipe 1 by
Top to bottm is gradually reduced.Several inlet openings 2 are set on the tube wall of described sleeve pipe 1 so that the excess pore water in the soil body pass through into
In 2 sleeve pipe 1 of water hole.The upper end and the lower end of the sleeve pipe positioned at outer layer of the sleeve pipe of internal layer are located in two adjacent sleeve pipes 1
Connection, by positioned at the external screw thread that arranges on the sleeve pipe 1 of internal layer and on the sleeve pipe 1 of outer layer between two adjacent sleeve pipes 1
The female thread connection of setting.The bottom of the sleeve pipe 1 of innermost layer arranges chassis 3, and chassis 3 can pass through spiral shell with the sleeve pipe 1 of innermost layer
Stricture of vagina connects.Hollow pipe 4 is set on the chassis 3, and the hollow pipe 4 is multistage setting, is sealed between two adjacent hollow pipes 4
Connection, the termination of two adjacent hollow pipes 4 are respectively provided with external screw thread, are all provided with female connection tube head by two terminations close
Envelope connection.The hollow pipe 4 is provided with water inlet 5 near the one end on chassis 3, and water inlet 5 can be funnel-shaped structure, facilitate water
Entrance.The top of the sleeve pipe 1 of top arranges thimble plug 7, the centrally disposed through hole 8 of described sleeve pipe plug 7, the hollow pipe 4
Through through hole 8 and expose to the top of sleeve pipe 1, the top connection water pump of hollow pipe 4, the excess pore water in sleeve pipe 1 is by water inlet
Mouth 5 is entered in hollow pipe 4, and excess pore water is extracted out by the water pump for then being connected by 4 top of hollow pipe.The bottom on the chassis 3
Rotating vane 6 is set, and the rotating vane 6 is welded with chassis 3.Beneficial effect is：By being located between two adjacent sleeve pipes 1
The external screw thread arranged on the sleeve pipe 1 of internal layer and the female thread connection arranged on the sleeve pipe 1 of outer layer, it is simple and convenient, using
When be connected firmly, and convenient dismounting is placed after the completion of use；The setting of thimble plug 7 can play a part of fixed hollow pipe 4,
Prevent hollow pipe 4 from the damage for causing hollow pipe 4 is rocked in sleeve pipe 1, improve service life；The diameter of sleeve pipe 1 from top to bottom by
It is decrescence little, facilitate the rotation of sleeve pipe 1 to be pressed in the soil body；Rotating vane 6 is welded with chassis 3, simple structure and is connected firmly so that
When in the rotation press-in soil body of sleeve pipe 1, rotating vane 6 is not easily disconnected from chassis 3.
A kind of concrete construction method of scalable excess pore water dissipation sleeve pipe is as follows：
1) drilling 9 is set in place with machinery, the depth of drilling 9 is 18 meters, and spacing is 2 meters, is adopted as shown in Figure 3
Quincuncial arrangement；
2) the flexible joint number of sleeve pipe 1 is set, and assembles sleeve pipe 1 on the ground；
3) by step 2) sleeve pipe 1 that assembles is put into step 1) drilling 9 in, then revoling tube 1 utilizes 3 bottom of chassis
The rotating vane of setting is screwed in foundation soil body；
4) ground heap carrier layer is laid after sleeve pipe 1 is installed, thickness is 1.0 meters, material thick fluvial sand in being；
5) top of hollow pipe 4 is connected with water pump, its top bassets 1.2 meters, is produced in prepressing water discharge consolidation process
Raw excess pore water is flowed in sleeve pipe 1 by the inlet opening 2 on 1 tube wall of sleeve pipe, after a period of time, the water level in hollow pipe 4
After reaching certain altitude, open water pump and the water in sleeve pipe 1 is extracted out, prepressing water discharge consolidation time is 80 days, repeats step of drawing water
For several times, until prepressing water discharge consolidation is completed, excess pore water in soil is discharged；
6) sleeve pipe 1 is reclaimed from drilling 9 after construction terminates, is placed after then dismantling.
Construction has carried out field test to ground after terminating.Concrete test for before and after reinforcing (i.e. using scalable super hole
Water dissipates before and after set pipe construction) site foundation soil vane shear strength detection, moisture content detection, void ratio detection, compressibility refers to
Mark detection.
Concrete outcome is as follows：
Table 1
| Soil layer moisture content | Void ratio | Coefficient of compressibility | Modulus of compressibility | Foundation bearing capacity | |
| Before reinforcing | 42% | 1.28 | 1.26MPa-1 | 1.57MPa | 62kPa |
| After reinforcing | 36% | 1.10 | 0.83MPa-1 | 2.39MPa | 95kPa |
2 vane shear strength of table is detected
Beneficial effect：By contrasting the vane shear strength detection data before and after reinforcing, it can be seen that：Add in the range of 0～3 meter
Gu after vane shear strength be reinforce before about 3.3 times, in the range of 3～6 meters reinforce after vane shear strength be reinforce before 5
Times, the vane shear strength after reinforcing in the range of 6～9 meters is about 4.1 times before reinforcing, the cross after reinforcing in the range of 9～12 meters
Plate intensity be reinforce before 2 times, in the range of 12～15 meters reinforce after vane shear strength be reinforce before about 1.9 times, 15～18
Vane shear strength after reinforcing in the range of rice is 2.4 times before reinforcing, and is added in the range of 18～21 meters (i.e. 3 meters below tubing depth)
Gu after vane shear strength be reinforce before 1.5 times；In the range of 0～9 meter, vane shear strength increasing degree is larger, strong compared with before processing
Degree increases by 3～5 times, and in the range of 9～18 meters, in more than 15kPa, maximum growth is 19kPa to increasing degree, tubing depth with
In the range of lower 3 meters, intensity also has larger growth.As can be seen from Table 1, the moisture content for reinforcing groundwork reduces by 14%, void ratio
14% is reduced, coefficient of compressibility reduces by 34%, and modulus of compressibility increases by 52.2%.Reinforce groundwork bearing capacity and be about 95kPa, can be with
Meet the foundation requirement of electric substation's construction.By analysis, discharging consolidation is carried out using scalable excess pore water dissipation sleeve pipe,
Excess pore water can be effectively discharged, dissipation excess pore water pressure reduces ground soil's water content and void ratio, accelerates soil
Body is consolidated, and achieves good consolidation effect；And sleeve pipe can be reclaimed after constructing, engineering cost is greatly reduced, is had
There is good economic benefit.
Claims (7)
1. a kind of scalable excess pore water dissipation sleeve pipe, is characterized in that：Connect together including the more piece for arranging from inside to outside
Sleeve pipe (1), arranges several inlet openings (2) on the tube wall of described sleeve pipe (1), positioned at internal layer in two adjacent sleeve pipes (1)
The upper end of sleeve pipe and the lower end connection of the sleeve pipe positioned at outer layer, the bottom of the sleeve pipe (1) of innermost layer arrange chassis (3), the bottom
Hollow pipe (4) is set on disk (3), and the hollow pipe (4) is multistage setting, is tightly connected between two adjacent hollow pipes (4),
The hollow pipe (4) is provided with water inlet (5) near the one end on chassis (3), and the bottom of the chassis (3) arranges rotating vane (6).
2. a kind of scalable excess pore water dissipation sleeve pipe according to claim 1, is characterized in that：Two adjacent sleeve pipes
(1) female thread between by arranging positioned at the external screw thread that arranges on the sleeve pipe (1) of internal layer and on the sleeve pipe (1) of outer layer connects
Connect.
3. a kind of scalable excess pore water dissipation sleeve pipe according to claim 1, is characterized in that：The sleeve pipe (1) of top
Top arrange thimble plug (7), the centrally disposed through hole (8) of described sleeve pipe plug (7), the hollow pipe (4) through through hole (8) and
Expose to the top of sleeve pipe (1).
4. a kind of scalable excess pore water dissipation sleeve pipe according to claim 1, is characterized in that：Described sleeve pipe (1) is circle
Platform shape structure, the diameter of described sleeve pipe (1) are gradually reduced from top to bottom.
5. a kind of scalable excess pore water dissipation sleeve pipe according to claim 1, is characterized in that：The rotating vane (6)
Weld with chassis (3).
6. the construction method of a kind of scalable excess pore water dissipation sleeve pipe according to any one of claim 1-5, its feature
It is to comprise the following steps：
1) drilling (9) is set in place；
2) the flexible joint number of sleeve pipe (1), assembling sleeve pipe (1) are set；
3) by step 2) sleeve pipe (1) that assembles is put into step 1) drilling (9) in, in revoling tube (1) press-in foundation soil body；
4) ground heap carrier layer is laid after sleeve pipe (1) is installed；
5) top of hollow pipe (4) is connected with water pump, opens pumping for water pump, repetition is drawn water for several times, until prepressing water discharge is consolidated
Complete；
6) sleeve pipe (1) is reclaimed.
7. a kind of construction method of scalable excess pore water dissipation sleeve pipe according to claim 6, is characterized in that：Step 1)
In drilling (9) in quincuncial arrangement, drilling (9) spacing be 2m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510786444.7A CN105350514B (en) | 2015-11-16 | 2015-11-16 | A kind of scalable excess pore water dissipation sleeve pipe and its construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510786444.7A CN105350514B (en) | 2015-11-16 | 2015-11-16 | A kind of scalable excess pore water dissipation sleeve pipe and its construction method |
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| Publication Number | Publication Date |
|---|---|
| CN105350514A CN105350514A (en) | 2016-02-24 |
| CN105350514B true CN105350514B (en) | 2017-04-05 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101307600A (en) * | 2008-07-14 | 2008-11-19 | 河北建设勘察研究院有限公司 | Method for consolidating soft soil ground foundation by dynamic pre drainage consolidation method |
| CN201943064U (en) * | 2010-12-09 | 2011-08-24 | 广东省航盛建设集团有限公司 | Drainage tubular pile |
| CN102433873A (en) * | 2011-09-13 | 2012-05-02 | 青岛理工大学 | Hollow pile with multiple holes on lateral wall |
| CN104141295A (en) * | 2013-05-07 | 2014-11-12 | 上海交通建设总承包有限公司 | Soft soil foundation combined treatment method |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5713442B2 (en) * | 2011-05-18 | 2015-05-07 | 五洋建設株式会社 | Ground improvement method and decompression vessel |
-
2015
- 2015-11-16 CN CN201510786444.7A patent/CN105350514B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101307600A (en) * | 2008-07-14 | 2008-11-19 | 河北建设勘察研究院有限公司 | Method for consolidating soft soil ground foundation by dynamic pre drainage consolidation method |
| CN201943064U (en) * | 2010-12-09 | 2011-08-24 | 广东省航盛建设集团有限公司 | Drainage tubular pile |
| CN102433873A (en) * | 2011-09-13 | 2012-05-02 | 青岛理工大学 | Hollow pile with multiple holes on lateral wall |
| CN104141295A (en) * | 2013-05-07 | 2014-11-12 | 上海交通建设总承包有限公司 | Soft soil foundation combined treatment method |
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| Publication number | Publication date |
|---|---|
| CN105350514A (en) | 2016-02-24 |
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