CN208803456U - A kind of structure for reinforcing peat soil using sand pile and drain bar - Google Patents

A kind of structure for reinforcing peat soil using sand pile and drain bar Download PDF

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Publication number
CN208803456U
CN208803456U CN201820329709.XU CN201820329709U CN208803456U CN 208803456 U CN208803456 U CN 208803456U CN 201820329709 U CN201820329709 U CN 201820329709U CN 208803456 U CN208803456 U CN 208803456U
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China
Prior art keywords
sand
chimney filter
sand pile
reinforcing
drain bar
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CN201820329709.XU
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Chinese (zh)
Inventor
张瑞棋
陈运涛
刘科良
朱胜利
黄志军
巩鑫
李胜
杜立波
刘方义
吴峪立
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CCCC First Harbor Engineering Co Ltd
Tianjin Port Engineering Institute Ltd of CCCC Frst Harbor Engineering Co Ltd
Tianjin Harbor Engineering Quality Inspection Center Co Ltd
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CCCC First Harbor Engineering Co Ltd
Tianjin Port Engineering Institute Ltd of CCCC Frst Harbor Engineering Co Ltd
Tianjin Harbor Engineering Quality Inspection Center Co Ltd
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Priority to CN201820329709.XU priority Critical patent/CN208803456U/en
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Abstract

The utility model discloses a kind of structures that peat soil is reinforced using sand pile and drain bar, including vertical drainage system, horizontal drainage system and vacuum evacuation device;The vertical drainage system includes sand pile and plastic draining board, and sand pile and plastic draining board are vertically arranged in in consolidated subsoil;The horizontal drainage system includes the sand bedding course being laid in on consolidated subsoil, the sealant being laid on sand bedding course and the chimney filter being embedded in sand bedding course;The sealant includes that the geotextile layer being located on sand bedding course and the geo membrane layers on geotextile layer, geo membrane layers edge are sealed by press mold ditch;The chimney filter includes main chimney filter and time chimney filter, and secondary chimney filter and the binding of plastic draining wrench connect, and secondary chimney filter is connected to main chimney filter by hose;Sealant is drawn by membrane device and is connected with vacuum evacuation device in the outer end of main chimney filter;It is equipped with geotextiles on the geomembrane of sealant, heap material containing is set in geotextiles, to realize combined vacuum and surcharge preloading.

Description

A kind of structure for reinforcing peat soil using sand pile and drain bar
Technical field
The utility model belongs to Soft Soil Subgrade Treatment Techniques field in geotechnical engineering, and in particular to it is a kind of using sand pile and The structure of drain bar reinforcing peat soil.
Background technique
Before carrying out architectural engineering, ground is reinforced by basement process, improve foundation soil strength, bearing capacity and Stability.Soft-soil foundation treatment method mainly has: changing and fills out, tamps (strong rammer), deep mixing method, vacuum preloading, piling prepressing etc.. Excavation, which changes, to be filled out suitable for Soft Soil Layer than relatively thin ground;Compacting (strong rammer) applies in general to processing gravelly soil, sand, low saturation Silt and cohesive soil, collapsible loess, miscellaneous fill etc.;Deep mixing method is suitable for comparing soft clay processing within 20m It is good;Vacuum preloading is suitable for saturated soft clay, and piling prepressing is suitable for handling deep saturated soft soil.
And have the spies such as moisture content is high, void ratio is big, plasticity index is high, sensitivity is high containing a large amount of organic matters in peat soil Property, it is undesirable routinely to set plastic draining board preloading method effect.Therefore sand pile and draining are used the utility model proposes a kind of The structure of plate reinforcing peat soil.
Utility model content
The purpose of the utility model is to overcome the deficiencies in the prior art, provides and a kind of reinforced using sand pile and drain bar The structure of peat soil, the structure are combined by sand pile and drain bar, using Vacuum-loading Pre-pressing Method, change peat soil Draining characteristics achieve the purpose that foundation soil quick-discharging consolidation.Easy for construction and investment construction cost is lower, using effect is good.
The utility model is achieved through the following technical solutions:
A kind of structure for reinforcing peat soil using sand pile and drain bar, including vertical drainage system, horizontal drainage system And vacuum evacuation device;
The vertical drainage system includes sand pile and plastic draining board, and sand pile and plastic draining board are vertically arranged in wait reinforce In ground;
The sealing that the horizontal drainage system includes the sand bedding course being laid in on consolidated subsoil, is laid on sand bedding course Layer and the chimney filter being embedded in sand bedding course;The sealant includes the geotextile layer on the sand bedding course and is located at geotextiles Geo membrane layers on layer, geo membrane layers edge is sealed by press mold ditch;The chimney filter includes main chimney filter and time chimney filter, secondary Chimney filter and the binding of plastic draining wrench connect, and secondary chimney filter is connected to main chimney filter by hose;The outer end of main chimney filter passes through membrane Device draws sealant and is connected with vacuum evacuation device;
It is equipped with geotextiles on the geomembrane of sealant, heap material containing is set in geotextiles, to realize vacuum combined stack Carry precompressed.
In the above-mentioned technical solutions, foundation surface is laid with bamboo sheathing and facilitates and construct as working cushion layer.
In the above-mentioned technical solutions, sand pile is at arranged in squares, spacing 1.8-2.5m.
In the above-mentioned technical solutions, sand pile diameter 70-90cm.
In the above-mentioned technical solutions, the center setting between two adjacent sand piles, plastic draining board, and every Plastic draining board is arranged in the center of 4 sand piles at square arrangement.
In the above-mentioned technical solutions, plastic draining board sand pile adjacent thereto and two adjacent plastic draining boards Between spacing be 80-90cm.
In the above-mentioned technical solutions, the sealant includes one layer of geotextiles and two layers of geomembrane.
In the above-mentioned technical solutions, main chimney filter is pvc pipe.
In the above-mentioned technical solutions, secondary chimney filter is flexible porous tube.
In the above-mentioned technical solutions, the vacuum means are set to vacuum jet pump.
The utility model compared with prior art the advantages of and have the beneficial effect that
1. simple structure and reasonable design, and it is low to put into construction cost.
2. South American region sand is abundant, gather materials on the spot.
3. increasing the infiltration coefficient of peat soil by setting sand pile, change the character of foundation soil, carries out vacuum combined stack During carrying precompressed, it can effectively slow down simple drain bar silting problem.
Detailed description of the invention
Fig. 1 is the sectional schematic diagram of the utility model.
Fig. 2 is the partial schematic plan view of the utility model.
1: ground, 2: bamboo sheathing, 3: sand bedding course, 4: sand pile, 5: plastic draining board, 6: chimney filter, 6-1: secondary chimney filter, 6-2: main filter Pipe, 7: geotextiles, 8: geomembrane, 9: press mold ditch, 10: vacuum evacuation device, 11: heap material containing.
It for those of ordinary skill in the art, without creative efforts, can be according to above attached Figure obtains other relevant drawings.
Specific embodiment
The technical solution of the utility model is further illustrated combined with specific embodiments below.
Embodiment one:
As depicted in figs. 1 and 2, a kind of structure for reinforcing peat soil using sand pile and drain bar, including vertical drainage system System, horizontal drainage system and vacuum evacuation device.
The vertical drainage system includes sand pile 4 and plastic draining board 5, and sand pile and plastic draining board are vertically arranged in be added Gu in ground 1.
The horizontal drainage system includes the sand bedding course 3 being laid in on consolidated subsoil, the sealing being laid on sand bedding course Layer and the chimney filter 6 being embedded in sand bedding course;The sealant includes 7 layers of the geotextiles on sand bedding course and is located at geotechnological 8 layers of geomembrane on layer of cloth, geo membrane layers edge are sealed by press mold ditch 9;The chimney filter 6 include main chimney filter 6-2 and Secondary chimney filter 6-1, secondary chimney filter and the binding of plastic draining wrench connect, and secondary chimney filter is connected to main chimney filter by hose;Main chimney filter Sealant is drawn by membrane device and is connected with vacuum evacuation device 10 in outer end.
Embodiment two:
The specific implementation step for constructing the above-mentioned structure for reinforcing peat soil using sand pile and drain bar is as follows:
1,1 surface vegetation of ground is removed, bamboo sheathing 2 is then laid with, as working cushion layer;
2, it is laid with 50cm~100cm sand bedding course 3, meets piling machine and board-plugging device work requirements;
3, set sand pile 4, sand pile diameter 80cm, spacing 2.2m, arranged in squares;
4, plastic draining board 5 is set, the center setting between two adjacent sand piles, plastic draining board, Yi Ji Every 4 at square arrangement sand pile center be arranged plastic draining board, plastic draining board sand pile adjacent thereto and Spacing between two adjacent plastic draining boards is 90cm;
5, it is laid with main chimney filter 6-2, secondary chimney filter 6-1, plastic draining wrench and time chimney filter binding are connected, secondary chimney filter and main filter Pipe is connected by hose, and primary and secondary chimney filter is buried in sand bedding course 3;
6, it is laid with one layer of geotextiles 7 and two layers of geomembrane 8 on sand bedding course, and a geotechnological film edge is stepped in press mold ditch 9;
7, geotextiles and geomembrane are drawn by membrane device in the outlet end of main chimney filter, and be connected with vacuum evacuation device 10 It is logical;
8, vacuum evacuation device 10 is opened, vacuum preloading is carried out.
Embodiment three:
On the basis of embodiment one and embodiment two, after pumping reaches one month, one layer is re-layed on geomembrane Geotextiles, the then classification addition heap material containing 11 in geotextiles, carry out combined vacuum and surcharge preloading.When construction, point three-level is carried out Preloading, the first order are 1~2m (height) medium-fine sand, and the second level is 2~3m (height) medium-fine sand, and the third level is 2~4m (height) Medium-fine sand.
Illustrative description has been done to the utility model above, it should explanation, in the core for not departing from the utility model In the case where the heart, it is any it is simple deformation, modification or other skilled in the art can not spend creative work etc. The protection scope of the utility model is each fallen with replacement.

Claims (10)

1. a kind of structure for reinforcing peat soil using sand pile and drain bar, it is characterised in that: including vertical drainage system, level Drainage system and vacuum evacuation device;
The vertical drainage system includes sand pile and plastic draining board, and sand pile and plastic draining board are vertically arranged in consolidated subsoil In;
The horizontal drainage system include the sand bedding course being laid in on consolidated subsoil, the sealant being laid on sand bedding course, with And it is embedded in the chimney filter in sand bedding course;The sealant includes the geotextile layer on sand bedding course and is located on geotextile layer Geo membrane layers, geo membrane layers edge is sealed by press mold ditch;The chimney filter includes main chimney filter and time chimney filter, secondary chimney filter with The binding connection of plastic draining wrench, and secondary chimney filter is connected to main chimney filter by hose;Drawn by membrane device the outer end of main chimney filter Sealant and it is connected out with vacuum evacuation device;
It is equipped with geotextiles on the geomembrane of sealant, heap material containing is set in geotextiles.
2. a kind of structure for reinforcing peat soil using sand pile and drain bar according to claim 1, it is characterised in that: ground Primary surface is laid with bamboo sheathing.
3. a kind of structure for reinforcing peat soil using sand pile and drain bar according to claim 1, it is characterised in that: sand Stake is at arranged in squares, spacing 1.8-2.5m.
4. a kind of structure for reinforcing peat soil using sand pile and drain bar according to claim 1, it is characterised in that: sand Stake diameter 70-90cm.
5. a kind of structure for reinforcing peat soil using sand pile and drain bar according to claim 1, it is characterised in that: Center setting between two adjacent sand piles, plastic draining board, and at the center of every 4 sand piles at square arrangement Plastic draining board is arranged in position.
6. a kind of structure for reinforcing peat soil using sand pile and drain bar according to claim 1, it is characterised in that: institute The spacing stated between plastic draining board sand pile adjacent thereto and two adjacent plastic draining boards is 80-90cm.
7. a kind of structure for reinforcing peat soil using sand pile and drain bar according to claim 1, it is characterised in that: institute Stating sealant includes one layer of geotextiles and two layers of geomembrane.
8. a kind of structure for reinforcing peat soil using sand pile and drain bar according to claim 1, it is characterised in that: main Chimney filter is pvc pipe.
9. a kind of structure for reinforcing peat soil using sand pile and drain bar according to claim 1, it is characterised in that: secondary Chimney filter is flexible porous tube.
10. a kind of structure for reinforcing peat soil using sand pile and drain bar according to claim 1, it is characterised in that: The vacuum means are set to vacuum jet pump.
CN201820329709.XU 2018-03-09 2018-03-09 A kind of structure for reinforcing peat soil using sand pile and drain bar Active CN208803456U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201820329709.XU CN208803456U (en) 2018-03-09 2018-03-09 A kind of structure for reinforcing peat soil using sand pile and drain bar

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201820329709.XU CN208803456U (en) 2018-03-09 2018-03-09 A kind of structure for reinforcing peat soil using sand pile and drain bar

Publications (1)

Publication Number Publication Date
CN208803456U true CN208803456U (en) 2019-04-30

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110485436A (en) * 2019-07-24 2019-11-22 浙江大学 Engineering slurry and dregs alternating layers backfill pit foundation structure and reconstruction ground based method
CN113106960A (en) * 2021-04-28 2021-07-13 昆明理工大学 Method for treating peat soil foundation by combination of stacking and temperature rise

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110485436A (en) * 2019-07-24 2019-11-22 浙江大学 Engineering slurry and dregs alternating layers backfill pit foundation structure and reconstruction ground based method
CN110485436B (en) * 2019-07-24 2021-03-05 浙江大学 Engineering slurry and slag soil interbedded backfill pit foundation structure and foundation reconstruction method
CN113106960A (en) * 2021-04-28 2021-07-13 昆明理工大学 Method for treating peat soil foundation by combination of stacking and temperature rise

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