CN108867619A - Drainage plate and method with water uptake expansion material under piling prepressing - Google Patents
Drainage plate and method with water uptake expansion material under piling prepressing Download PDFInfo
- Publication number
- CN108867619A CN108867619A CN201810614498.9A CN201810614498A CN108867619A CN 108867619 A CN108867619 A CN 108867619A CN 201810614498 A CN201810614498 A CN 201810614498A CN 108867619 A CN108867619 A CN 108867619A
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- Prior art keywords
- water
- drain bar
- expansion material
- uptake expansion
- soft soil
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- Pending
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 138
- 239000000463 material Substances 0.000 title claims abstract description 65
- 238000000034 method Methods 0.000 title claims abstract description 22
- 239000002689 soil Substances 0.000 claims abstract description 86
- 230000008961 swelling Effects 0.000 claims abstract description 61
- 238000006073 displacement reaction Methods 0.000 claims abstract description 3
- 229920003023 plastic Polymers 0.000 claims description 28
- 239000004033 plastic Substances 0.000 claims description 28
- 239000004746 geotextile Substances 0.000 claims description 3
- 239000002250 absorbent Substances 0.000 abstract description 5
- 239000011148 porous material Substances 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 3
- 206010042674 Swelling Diseases 0.000 description 45
- 238000010276 construction Methods 0.000 description 5
- 230000003014 reinforcing effect Effects 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 239000011800 void material Substances 0.000 description 2
- 235000007926 Craterellus fallax Nutrition 0.000 description 1
- 240000007175 Datura inoxia Species 0.000 description 1
- 240000002853 Nelumbo nucifera Species 0.000 description 1
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 1
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000012279 drainage procedure Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 229920000247 superabsorbent polymer Polymers 0.000 description 1
- 230000009466 transformation Effects 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
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Structural Engineering (AREA)
- 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 drainage plates and method with water uptake expansion material interior under a kind of piling prepressing.Device includes several pieces of water swelling drain bars, and water swelling drain bar the soft soil foundation ground surface heap in a row-shaped that be piled in soft soil foundation, and clamp between two pieces of adjacent water swelling drain bars that is spaced is loaded with precompressed soil；Water swelling drain bar is made of drain bar, water uptake expansion material and tissue layer, and water uptake expansion material is wrapped in tissue layer, and two sides pass through drain bar respectively and clamp to form sandwich structure；Permeable hole is offered on drain bar；And the drain bar of water uptake expansion material two sides is laterally not fixed, the freedom degree with laterally outward displacement in water uptake expansion material expansion.For the present invention in Soft Ground, the pore water in the soil body enters water-absorbent material by drain bar, expands after water-absorbent material water suction, and drain bar is squeezed to two sides, generates squeezing effect to the periphery soil body.After the completion of soft soil foundation draining, water-absorbent material can be stayed in foundation soil.
Description
Technical field
The invention belongs to Soft Ground fields, and in particular to the row with water uptake expansion material under a kind of piling prepressing
Water panel assembly and method.
Background technique
Preloading is often used in Soft Ground, especially coastal, hydraulic reclamation is regional, and is using piling prepressing
When method carries out basement process, plastic draining board is often used as drainage channel again.
In piling prepressing, the preloading of soil body top generates additional stress to the soil body, generates Super-void Water Pressure in the soil body of lower part,
Pore water in the soil body enters in plastic draining board, then earth's surface is discharged via the drainage channel in drain bar.Ground was draining
It is consolidated in journey, soil strength gradually increases, and achievees the effect that ground is strengthened.
But the draining of very widely used today preloading the main problems are as follows：
1. in general, load needed for piling prepressing is larger, and often the area of basement process is also very big, therefore preloading
Very big project amount is needed with the process of unloading.
2., due to the presence of stress diffusion angle, top preloading is affected to the upper layer soil body according to principles of soil mechanics, generate
Additional stress it is larger, Super-void Water Pressure is larger, and draining is very fast；But for deep soil, the additional stress of generation is smaller, surpasses
Pore water pressure is also smaller, drains slower.This method is ineffective to the stabilization by drainage of deep soil.
3. Reinforcing Soft-soil Foundation by Preloading Method of Accumulating Load generally require expend long time, for engineering construction efficiency very not
Therefore benefit accelerates this drainage procedure particularly important.
Summary of the invention
It is an object of the invention to be directed to the deficiency of Reinforcing Soft-soil Foundation by Preloading Method of Accumulating Load, propose under a kind of piling prepressing
The interior drainage plate with water uptake expansion material.
The technical solution adopted by the present invention to solve the technical problems is：
A kind of drainage plate with water uptake expansion material under piling prepressing comprising several pieces of water swellings drainings
Plate, water swelling drain bar interval in a row-shaped are piled in soft soil foundation to be processed, and adjacent two pieces of water swellings draining
The soft soil foundation ground surface heap clamped between plate is loaded with precompressed soil；The water swelling drain bar is by plastic draining board, water suction
Expanding material and tissue layer composition, the water uptake expansion material are wrapped in tissue layer, and two sides pass through plastic draining respectively
Plate clamps to form sandwich structure；And the plastic draining board of water uptake expansion material two sides is laterally not fixed, in water uptake expansion material
With the freedom degree of laterally outward displacement when expansion.
In the present invention, water uptake expansion material is after material absorbs water, and the material that volume can expand can be using existing
There are any material with such property in technology, such as water-absorbing resin (Super Absorbent Polymer, SAP).
Preferably, the water uptake expansion material is wrapped in tissue layer in the form of packed, so that water uptake expansion material
It will not be leaked out in expansion process, effective expansion thrust can be formed to drain bar.
Preferably, the tissue layer is made of seepy material.Further, the tissue layer can be using soil
Work cloth, to reduce cost.
Preferably, the top of the water swelling drain bar is concordant with the ground surface of soft soil foundation, in order to earth's surface
Constructing operation.
Preferably, the water swelling drain bar is in the depth of burying and soft soil foundation depth to be processed below ground
It spends identical, enables drain bar to the uniformly applied additional stress of soil layer of entire depth to be processed.
Preferably, the water swelling drain bar is vertically squeezed into soft soil foundation, same row's water swelling draining
The plate face of plate is parallel and block-by-block face, the soil layer for draining row's water swelling in span of slab can be efficiently treated.
Preferably, offering permeable hole on the plastic draining board.
Another object of the present invention is to provide a kind of soft soil foundation piling prepressing water discharge method using above-mentioned apparatus,
Steps are as follows：
1) the water swelling drain bar block-by-block is squeezed into soft soil foundation to be processed, and water swelling drain bar is in
Row pattern distribution, the pending soft soil foundation region of covering institute；
2) piling prepressing soil above the soft soil foundation ground surface clamped between two pieces of adjacent water swelling drain bars, benefit
Additional stress is generated to the soft soil foundation soil body with the load of pre- firming, makes the water in ground by plastic draining board by water swelling
Material absorbs；
3) plastic draining board of water swelling drain bar is laterally outward moved in the case where the expansive force of water uptake expansion material pushes
Dynamic, adjacent two pieces of water swelling drain bars apply stress to the soft soil foundation clamped between the two, are pressed further by draining；
4) after completing soft soil foundation draining purpose, water swelling drain bar is stayed in soft soil foundation soil, after then carrying out
Continuous working procedure.
The beneficial effects of the invention are as follows：
One, there is water uptake expansion material among two plastic draining boards, volume expansion when material absorbs water pushes drain bar to squeeze
The problem of soil at both sides forms and loads and generate additional stress, equally useful to deep soil, and unbalanced stress is not present；
Two, due to the load of water uptake expansion material, it is possible to reduce the preloading at the top of the soil body reduces project amount；
Three, the pore water in a large amount of grounds can be absorbed in water-absorbent material itself, and the water in material will not be lost again, greatly
The time for reducing draining greatly, reduce the duration；
Four, after draining, water-absorbent material can be stayed in foundation soil, can play the effect of consolidated subsoil.
Detailed description of the invention
Fig. 1 is the side view of the drain bar piling prepressing device with the water uptake expansion material present invention Nei；
Fig. 2 is device top view when water swelling drain bar does not absorb water in the present invention；
Fig. 3 is the device top view in the present invention after the water swelling of water swelling drain bar；
In figure：Plastic draining board 1, water uptake expansion material 2, tissue layer 3, pre- firming 4.
Specific embodiment
The present invention is further elaborated and is illustrated with reference to the accompanying drawings and examples.Each embodiment in the present invention
Technical characteristic can carry out the corresponding combination under the premise of not conflicting with each other.
As shown in Figure 1, the drainage plate with water uptake expansion material under one of the present embodiment piling prepressing, the dress
It include muti-piece water swelling drain bar in setting.Water swelling drain bar is in a row-shaped to be piled in soft soil foundation to be processed.Every row
It is spaced apart between adjacent two pieces of water swelling drain bars in drain bar, plate face just face, two pieces of water swelling drainings
The soil body between plate is exactly the zone of action of this two boards.All water swelling drain bars are vertically squeezed into ground, same
Row's water swelling drain bar is parallel to each other, and plate face (i.e. 1 place plane of plastic draining board) block-by-block face, i.e. its plate face center
Point is as far as possible on the plumb line of same vertical plate face, so that the soil layer between the plate-laying body can obtain effective pre- pressure
Water.The soft soil foundation ground surface heap clamped between two pieces of adjacent water swelling drain bars is loaded with precompressed soil 4, the lotus of pre- firming 4
Additional stress can be applied to the soil body between two boards by carrying.For above-mentioned water swelling drain bar when squeezing into, top is to the greatest extent
Amount is concordant with the ground surface of soft soil foundation, in favor of the constructing operation of subsequent handling.Water swelling drain bar is below ground
The depth of burying is identical as soft soil foundation depth to be processed, to carry out extrusion drainage to all soft soil foundations.Water swelling
The width of drain bar can be adjusted according to soft soil foundation region to be processed, when processing region width is little, can be made
The width of water swelling drain bar is greater than processing region width；And when processing region width is larger, it can be multiple rows of by being arranged
Water swelling drain bar arranged side by side carries out Combined Treatment, and multiple rows of expansion drain bar mutually overlaps to cover entire treatment region field width
Degree.
Water swelling drain bar in the present embodiment is a kind of plate body for capableing of lateral expansion after absorbing water, specific structure
As shown in Fig. 2, being made of plastic draining board 1, water uptake expansion material 2 and tissue layer 3.Wherein water uptake expansion material 2 can use
Water-absorbing resin can largely absorb soil Interstitial Water, and is fixed in material by volume expansion.Tissue layer 3 needs to use
Seepy material is made, using geotextiles in the present embodiment.Water uptake expansion material 2 is wrapped in tissue layer 3 in packed form
In, two sides pass through the clamping of plastic draining board 1 respectively and form sandwich structure.Conventional weak soil can be used on plastic draining board 1
Basement process drain bar is quilted plastic panel among it, is the skeleton and drainage channel of drain bar, two sides is with non-woven geotextile
Package makees filtering layer, water can be discharged to ground upwards.Board width is drained to be determined according to production specification.It can be opened on plastic draining board 1
Equipped with permeable hole, the Interstitial Water in soft soil foundation is enable to enter the water swelling inside tissue layer 3 by these holes
In material 2.In order to guarantee water swelling drain bar can lateral expansion, the plastic draining board 1 of 2 two sides of water uptake expansion material only glues
It ties outside tissue layer 3, but horizontally not by the fixed limit of the connector of rigidity between two pieces of plastic draining boards 1, and
Tissue layer 3 also has certain retractility in transverse direction, enables and pushes plastic draining when water uptake expansion material 2 expands
Plate 1 is laterally outward expanded, and transverse width becomes larger after expansion, as shown in Figure 3.When two pieces of equal water swellings of water swelling drain bar
When, the soft soil foundation clamped between the two is subject to lateral additional stress, so that internal soil gap water is quickly squeezed
Out, and after the water suction of water uptake expansion material 2 plastic draining board 1 can be further pushed to expand, so that the gap in soft soil foundation
Water energy is enough to be discharged as much as possible.When Soft Ground, the pore water in soil, can not be completely by water swelling material compared with horn of plenty
When material 2 absorbs, it can also be gushed out upwards by the gap between water uptake expansion material 2, be discharged to earth's surface.
In the present invention, since water swelling drain bar itself is capable of providing lateral stress, the pre- firming 4 of ground surface
Heap carrying capacity can accordingly reduce, and reduce entire project amount.If moreover, having the machinery met the requirements after water-absorbing resin water swelling
Intensity then may not need taking-up plate body, directly carry out smooth rear progress subsequent construction process to ground.Certainly, according to construction work
The difference of sequence can also be drawn off then carrying out backfill reinforcing again.
Soft soil foundation piling prepressing water discharge method based on above-mentioned apparatus, construction procedure are as follows：
1) above-mentioned water swelling drain bar is squeezed into soft soil foundation to be processed by construction equipment block-by-block, and inhaled
Water expands drain bar distribution in a row-shaped, covers the pending soft soil foundation region of institute in plane and depth direction, i.e., from depth
It is squeezed on degree to the target depth that need to be handled, covers all pending area width, most end on plane length in plane width
Two pieces of water swelling drain bars be located at the length direction of pending district end to end except position.
2) above the soft soil foundation ground surface clamped between two pieces of adjacent water swelling drain bars, piling prepressing soil 4,
Additional stress is generated to the soft soil foundation soil body using the load of pre- firming 4, the water in ground is made to be absorbed water by plastic draining board 1
Expanding material 2 absorbs；
3) plastic draining board 1 of water swelling drain bar is laterally outward moved in the case where the expansive force of water uptake expansion material 2 pushes
Dynamic, adjacent two pieces of water swelling drain bars apply stress to the soft soil foundation clamped between the two, are pressed further by draining；
4) after completing soft soil foundation draining purpose, water swelling drain bar is stayed in soft soil foundation soil, after then carrying out
Continuous working procedure.
Above-mentioned embodiment is only a preferred solution of the present invention, so it is not intended to limiting the invention, all
The mode of equivalent substitution or equivalent transformation technical solution obtained is taken, is fallen within the scope of protection of the present invention.
Claims (9)
1. the drainage plate with water uptake expansion material under a kind of piling prepressing, which is characterized in that swollen including several pieces of water suctions
Swollen drain bar, water swelling drain bar interval in a row-shaped is piled in soft soil foundation to be processed, and two pieces of adjacent water suctions are swollen
It is native (4) that the soft soil foundation ground surface heap clamped between swollen drain bar is loaded with precompressed；The water swelling drain bar is by plastic row
Water plate (1), water uptake expansion material (2) and tissue layer (3) composition, the water uptake expansion material (2) are wrapped in tissue layer (3)
In, two sides pass through plastic draining board (1) clamping respectively and form sandwich structure；And the plastics of water uptake expansion material (2) two sides
Drain bar (1) is laterally not fixed, the freedom degree with laterally outward displacement when water uptake expansion material (2) are expanded.
2. the drain bar piling prepressing device with water uptake expansion material in as described in claim 1, which is characterized in that described
Water uptake expansion material (2) is wrapped in tissue layer (3) in the form of packed.
3. the drain bar piling prepressing device with water uptake expansion material in as described in claim 1, which is characterized in that described
Tissue layer (3) is made of seepy material.
4. the drain bar piling prepressing device with water uptake expansion material in as claimed in claim 3, which is characterized in that described
Tissue layer (3) uses geotextiles.
5. the drain bar piling prepressing device with water uptake expansion material in as described in claim 1, which is characterized in that described
The top of water swelling drain bar and the ground surface of soft soil foundation are concordant.
6. the drain bar piling prepressing device with water uptake expansion material in as described in claim 1, which is characterized in that described
Water swelling drain bar is identical as soft soil foundation depth to be processed in the depth of burying below ground.
7. the drain bar piling prepressing device with water uptake expansion material in as described in claim 1, which is characterized in that described
Water swelling drain bar is vertically squeezed into soft soil foundation, and the plate face of same row's water swelling drain bar is parallel and block-by-block face.
8. the drain bar piling prepressing device with water uptake expansion material in as described in claim 1, which is characterized in that described
Plastic draining board offers permeable hole on (1).
9. a kind of soft soil foundation piling prepressing water discharge method using claim 1 described device, which is characterized in that step is such as
Under：
1) the water swelling drain bar block-by-block is squeezed into soft soil foundation to be processed, and water swelling drain bar is in a row-shaped
Distribution, the pending soft soil foundation region of covering institute；
2) piling prepressing soil (4) above the soft soil foundation ground surface clamped between two pieces of adjacent water swelling drain bars, benefit
Additional stress is generated to the soft soil foundation soil body with the load of pre- firming (4), inhales the water in ground by plastic draining board (1)
Water-swelling material (2) absorbs；
3) plastic draining board (1) of water swelling drain bar is laterally outward moved in the case where the expansive force of water uptake expansion material (2) pushes
Dynamic, adjacent two pieces of water swelling drain bars apply stress to the soft soil foundation clamped between the two, are pressed further by draining；
4) after completing soft soil foundation draining purpose, water swelling drain bar is stayed in soft soil foundation soil, subsequent apply then is carried out
Work process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810614498.9A CN108867619A (en) | 2018-06-14 | 2018-06-14 | Drainage plate and method with water uptake expansion material under piling prepressing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810614498.9A CN108867619A (en) | 2018-06-14 | 2018-06-14 | Drainage plate and method with water uptake expansion material under piling prepressing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108867619A true CN108867619A (en) | 2018-11-23 |
Family
ID=64338914
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810614498.9A Pending CN108867619A (en) | 2018-06-14 | 2018-06-14 | Drainage plate and method with water uptake expansion material under piling prepressing |
Country Status (1)
| Country | Link |
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| CN (1) | CN108867619A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110374393A (en) * | 2019-08-15 | 2019-10-25 | 安徽凯越电力杆塔有限公司 | A kind of conical surface quickly connects concrete wire |
| CN111977930A (en) * | 2020-08-13 | 2020-11-24 | 杨兰 | Ozone oxidation and photocatalytic magnetic field enhanced sludge treatment method |
| CN111977927A (en) * | 2020-08-13 | 2020-11-24 | 杨兰 | Sludge treatment method |
| CN111974038A (en) * | 2020-08-13 | 2020-11-24 | 杨兰 | Diaphragm plate of diaphragm type filter press |
| CN112049103A (en) * | 2020-09-14 | 2020-12-08 | 中国建筑第五工程局有限公司 | Construction method for rapid drainage and reinforcement of soft soil foundation |
| CN112796295A (en) * | 2021-01-07 | 2021-05-14 | 北京科技大学 | Method for extruding compact rock-soil body through soybean capsule air inflation |
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|---|---|---|---|---|
| JPH05125726A (en) * | 1991-11-05 | 1993-05-21 | Jiototsupu:Kk | Construction of pile with drain layer |
| CN102817353A (en) * | 2012-08-03 | 2012-12-12 | 华侨大学 | Composite soft clay foundation |
| CN103243705A (en) * | 2013-05-30 | 2013-08-14 | 高远 | Expanding water absorption and drainage consolidation device |
| CN206581248U (en) * | 2017-02-21 | 2017-10-24 | 浙江绿建建筑设计有限公司 | soft soil foundation drainage system |
| CN208578027U (en) * | 2018-06-14 | 2019-03-05 | 浙江大学 | Drainage plate with water uptake expansion material under a kind of piling prepressing |
-
2018
- 2018-06-14 CN CN201810614498.9A patent/CN108867619A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05125726A (en) * | 1991-11-05 | 1993-05-21 | Jiototsupu:Kk | Construction of pile with drain layer |
| CN102817353A (en) * | 2012-08-03 | 2012-12-12 | 华侨大学 | Composite soft clay foundation |
| CN103243705A (en) * | 2013-05-30 | 2013-08-14 | 高远 | Expanding water absorption and drainage consolidation device |
| CN206581248U (en) * | 2017-02-21 | 2017-10-24 | 浙江绿建建筑设计有限公司 | soft soil foundation drainage system |
| CN208578027U (en) * | 2018-06-14 | 2019-03-05 | 浙江大学 | Drainage plate with water uptake expansion material under a kind of piling prepressing |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110374393A (en) * | 2019-08-15 | 2019-10-25 | 安徽凯越电力杆塔有限公司 | A kind of conical surface quickly connects concrete wire |
| CN110374393B (en) * | 2019-08-15 | 2021-01-22 | 泗县微腾知识产权运营有限公司 | Conical surface quick connection concrete wire pole |
| CN111977930A (en) * | 2020-08-13 | 2020-11-24 | 杨兰 | Ozone oxidation and photocatalytic magnetic field enhanced sludge treatment method |
| CN111977927A (en) * | 2020-08-13 | 2020-11-24 | 杨兰 | Sludge treatment method |
| CN111974038A (en) * | 2020-08-13 | 2020-11-24 | 杨兰 | Diaphragm plate of diaphragm type filter press |
| CN111974038B (en) * | 2020-08-13 | 2022-08-30 | 冯平仓 | Diaphragm plate of diaphragm type filter press |
| CN111977930B (en) * | 2020-08-13 | 2022-12-13 | 长治市博奇环保科技有限公司 | Ozone oxidation and photocatalytic magnetic field enhanced sludge treatment method |
| CN111977927B (en) * | 2020-08-13 | 2024-05-10 | 哈尔滨排水集团管沟污水污泥实验室有限责任公司 | Sludge treatment method |
| CN112049103A (en) * | 2020-09-14 | 2020-12-08 | 中国建筑第五工程局有限公司 | Construction method for rapid drainage and reinforcement of soft soil foundation |
| CN112796295A (en) * | 2021-01-07 | 2021-05-14 | 北京科技大学 | Method for extruding compact rock-soil body through soybean capsule air inflation |
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Application publication date: 20181123 |