CN112459043A - Three-dimensional disturbance type vacuum preloading foundation treatment system - Google Patents
Three-dimensional disturbance type vacuum preloading foundation treatment system Download PDFInfo
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- CN112459043A CN112459043A CN202011438384.7A CN202011438384A CN112459043A CN 112459043 A CN112459043 A CN 112459043A CN 202011438384 A CN202011438384 A CN 202011438384A CN 112459043 A CN112459043 A CN 112459043A
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- 239000002689 soil Substances 0.000 claims abstract description 50
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 49
- 239000000945 filler Substances 0.000 claims description 8
- 238000007789 sealing Methods 0.000 claims description 8
- 238000007599 discharging Methods 0.000 claims description 7
- 238000009941 weaving Methods 0.000 claims description 6
- 239000000835 fiber Substances 0.000 claims description 5
- 238000001914 filtration Methods 0.000 claims description 5
- 238000010276 construction Methods 0.000 claims description 3
- 239000002245 particle Substances 0.000 claims description 3
- 239000012528 membrane Substances 0.000 claims description 2
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 239000012466 permeate Substances 0.000 claims description 2
- 238000005516 engineering process Methods 0.000 description 9
- 238000000034 method Methods 0.000 description 5
- 239000004746 geotextile Substances 0.000 description 3
- 239000004576 sand Substances 0.000 description 3
- 239000004927 clay Substances 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000009435 building construction Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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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
-
- 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
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- 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 a three-dimensional disturbance type vacuum preloading foundation treatment system, which comprises a horizontal drainage subsystem and a vertical drainage subsystem; the horizontal drainage subsystem comprises a plurality of horizontal drainage pipes horizontally arranged on the soil and a first water collecting pipe, and the plurality of horizontal drainage pipes are communicated with the head end of the first water collecting pipe; the vertical drainage subsystem is including a plurality of levels arrange horizontal connection pipe on soil, a plurality of top connect in corresponding horizontal connection pipe on and insert the vertical drain pipe in the ground soil, set up vibrator on every vertical drain pipe bottom and second collector pipe, a plurality of horizontal connection pipe all communicate with the head end of second collector pipe. The invention discharges the water in the shallow layer and the deep layer of the soil body by vacuumizing through the two subsystems, and is provided with the vibration device, the soil body is disturbed to a certain extent through vibration, and the discharge speed of the water in the soil is greatly accelerated by the soil body in a disturbed state.
Description
Technical Field
The invention relates to the technical field of foundation reinforcement in building construction, in particular to a three-dimensional disturbance type vacuum preloading foundation treatment system.
Background
Vacuum preloading was originally proposed by professor jierman, a royal geologist in sweden, and then exploration and research were carried out successively in the relevant countries, and the technology was studied in the late 50 s and early 60 s.
The vacuum preloading method is a foundation treatment method which comprises the steps of arranging a vertical plastic drainage belt or a sand well in soft clay, paving a sand layer on the soft clay, covering a sealing film, performing air extraction treatment on the lower part of the sealing film by using a vacuum pumping device, so that the drainage belt, the sand layer and the like in the sealing film are in a partial vacuum state, applying a certain static load to the foundation soil in a phase change manner by using atmospheric pressure, and discharging water in the soil from the drainage belt under the action of preloading so as to reduce the later settlement of the foundation.
The foundation treatment methods such as a direct-discharge vacuum preloading technology, a supercharged vacuum preloading technology, an independent vacuum preloading technology and the like are developed at present, and compared with the traditional vacuum preloading foundation treatment technology, the distribution of the drainage plates is improved into spatial three-dimensional distribution, so that the drainage speed of water in soil is increased, the foundation settlement speed is accelerated, and the improvement effect is not obvious enough. The newly proposed vacuum preloading foundation treatment technology increases water discharge from the aspect of pressure, increases the pressure at the bottom of foundation soil on the basis of three-dimensional vacuum preloading, and increases the pressure difference between the upper surface and the lower surface of the foundation soil. Like the booster vacuum preloading technology, the inflation bag is embedded in advance under the foundation soil to increase the pressure under the foundation soil, and the technology needs to backfill the foundation soil after the inflation bag is embedded, so that the engineering quantity is large. Therefore, a method for accelerating the vacuum preloading processing speed on the premise of avoiding large-scale excavation of foundation soil is not available at present.
Disclosure of Invention
The invention provides a three-dimensional disturbance type vacuum preloading foundation treatment system which comprises a horizontal drainage subsystem and a vertical drainage subsystem, wherein shallow and deep water of a soil body is drained through vacuumizing by the two subsystems, a vibration device is arranged, certain disturbance is generated on the soil body through vibration, and the drainage speed of water in the soil is greatly accelerated by the soil body in a disturbance state.
The technical scheme of the invention is as follows:
a three-dimensional disturbance type vacuum preloading foundation treatment system comprises a horizontal drainage subsystem and a vertical drainage subsystem; the horizontal drainage subsystem comprises a plurality of horizontal drainage pipes horizontally arranged on soil and a first water collecting pipe, and the plurality of horizontal drainage pipes are communicated with the head end of the first water collecting pipe; the vertical drainage subsystem comprises a plurality of horizontal connecting pipes horizontally arranged on soil, a plurality of vertical drainage pipes, a vibration device and a second water collecting pipe, wherein the top ends of the vertical drainage pipes are connected to the corresponding horizontal connecting pipes and inserted into foundation soil, the vibration device is arranged at the bottom end of each vertical drainage pipe, and the horizontal connecting pipes are communicated with the head ends of the second water collecting pipes; the end of first collector pipe and second collector pipe all be connected with the vacuum pump that corresponds, all be provided with along the axial on horizontal drain pipe and the vertical drain pipe and permeate water the hole, vertical drain pipe and horizontal connection intraductal all be provided with waterproof wire, vibrator on the vertical drain pipe bottom is connected with external controller through the waterproof wire that corresponds vertical drain pipe and horizontal connection pipe and is realized the control and start.
The water collecting device is characterized in that the horizontal water discharging pipes are transversely and longitudinally arranged and are mutually communicated to form a latticed communicated tubular structure, a water discharging port is arranged on the latticed communicated tubular structure, and the water discharging port is communicated with the head end of the first water collecting pipe.
A plurality of horizontal connecting pipes be parallel to each other, and all be connected with the vertical drain pipe that equals quantity on every horizontal connecting pipe, the vertical drain pipe that connects on every horizontal connecting pipe evenly arranges along horizontal connecting pipe's axial, every horizontal connecting pipe's one end is enclosed construction, every horizontal connecting pipe's the other end all communicates with the head end of second collector pipe.
Horizontal drain pipe and vertical drain pipe be the bilayer pipe structure, all set up along axial evenly distributed's the hole of permeating water on the bilayer pipe, the equal sealing connection in both ends of bilayer pipe all is provided with between the bilayer pipe and filters the filler.
The filtering filler is plastic fiber filler and is used for filtering soil particles in water.
The waterproof conducting wire comprises a water-stop pipe arranged in the vertical water drainage pipe or the horizontal connecting pipe and a conducting wire penetrating through the water-stop pipe.
The foundation soil on all be provided with first layer geotechnological weaving, horizontal drainage pipe and the horizontal connecting pipe of vertical drainage subsystem of horizontal drainage subsystem all set up on first layer geotechnological weaving, horizontal drainage pipe and the horizontal connecting pipe of vertical drainage subsystem on all covered second floor geotechnological weaving and seal membrane.
The soil on the position that lies in first collector pipe and second collector pipe all be provided with the counter-pressure ditch.
The invention has the advantages that:
(1) compared with the traditional vacuum preloading foundation treatment technology, the vertical drainage subsystem and the horizontal drainage subsystem jointly form a three-dimensional vacuum preloading foundation treatment system, and the two subsystems are respectively controlled by different vacuum water pumps and independently pump water; the two independent subsystems can fully ensure the vacuum degree of the whole foundation, overcome the defects of inconsistent vacuum degree of soil below the sealing film and slow sedimentation of foundation soil in the traditional vacuum preloading foundation treatment method, and ensure that the foundation can be quickly and uniformly compressed and consolidated.
(2) In the vertical drainage subsystem, the vertical drainage pipe is provided with water permeable holes and is of a double-layer pipe structure, and plastic fiber fillers are filled between the double-layer pipes to ensure that gas and water in soil can be discharged through the drainage pipe; the horizontal connecting pipe is of a single-pipe structure and is not provided with a water permeable hole so as to reduce the loss of vacuum degree transmission; all be provided with the riser in vertical drain pipe and the horizontal connecting pipe for run through the wire, realize waterproof function.
(3) The bottom end of the vertical water drainage pipe is provided with the vibration device, the vibration device can generate vibration disturbance on the surrounding soil body, and the drainage speed of the soil body in a disturbance state is greatly improved, so that the vacuum preloading speed is improved;
(4) in the horizontal drainage subsystem, the horizontal drainage pipe is provided with the water permeable holes, the horizontal drainage pipe is of a double-layer pipe structure, plastic fiber filler is filled between the double-layer pipes to ensure that gas and water in soil can be discharged through the drainage pipe, and the horizontal drainage subsystem can ensure that a shallow soil body reaches a certain vacuum degree.
Drawings
Fig. 1 is a top view of the present invention.
Fig. 2 is a longitudinal sectional view of the present invention.
Fig. 3 is a schematic view of the structure of the vertical drain pipe of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-3, a three-dimensional disturbance type vacuum preloading foundation treatment system comprises a horizontal drainage subsystem and a vertical drainage subsystem;
the horizontal drainage subsystem comprises a plurality of horizontal drainage pipes 1 horizontally arranged on soil and a first water collecting pipe 2, the horizontal drainage pipes 1 are transversely and longitudinally arranged and are mutually communicated to form a latticed communicated tubular structure, a drainage port is arranged on the latticed communicated tubular structure, and the drainage port is communicated with the head end of the first water collecting pipe 2;
the vertical drainage subsystem comprises a plurality of horizontal connecting pipes 3 horizontally arranged on soil, a plurality of vertical drainage pipes 4 with top ends connected to the corresponding horizontal connecting pipes 3 and inserted into foundation soil, a vibration device 5 arranged at the bottom end of each vertical drainage pipe 4, and a second water collecting pipe 6, wherein the plurality of horizontal connecting pipes 3 are parallel to each other, each horizontal connecting pipe 3 is connected with an equal number of vertical drainage pipes 4, the vertical drainage pipes 4 connected to each horizontal connecting pipe 3 are uniformly arranged along the axial direction of the horizontal connecting pipe 3, one end of each horizontal connecting pipe 3 is of a closed structure, and the other end of each horizontal connecting pipe 3 is communicated with the head end of the second water collecting pipe 6;
the end of first collector pipe 2 and second collector pipe 6 all is connected with corresponding vacuum pump 7, horizontal drain pipe 1 and vertical drain pipe 4 are the bilayer pipe structure, all set up along axial evenly distributed's the hole 8 of permeating water on the bilayer pipe, the equal sealing connection in both ends of bilayer pipe, all be provided with the plastic fiber who is used for filtering aquatic soil particles between the bilayer pipe and pack, all be provided with water-stop pipe 9 in vertical drain pipe 4 and the horizontal connecting pipe 3, wear to be equipped with wire 10 in the water-stop pipe 9, vibrator 5 on the vertical drain pipe 4 bottom is connected with external controller 11 through the wire 10 that corresponds vertical drain pipe and horizontal connecting pipe and is realized the control and start.
The foundation soil is provided with a first layer of geotextile 12, a horizontal drainage pipe 1 of a horizontal drainage subsystem and a horizontal connecting pipe 3 of a vertical drainage subsystem are both arranged on the first layer of geotextile 12, and a second layer of geotextile and a sealing film 13 are covered on the horizontal drainage pipe 1 of the horizontal drainage subsystem and the horizontal connecting pipe 3 of the vertical drainage subsystem; a counter-pressure ditch 14 is provided in the soil at the location of both the first header pipe 2 and the second header pipe 6.
When the ground is handled in vacuum preloading, start two vacuum water pumps 7, the moisture of the shallow layer of soil body loops through behind horizontal drain pipe 1 and first collector pipe 2 and discharges, the deep moisture of the soil body loops through vertical drain pipe 4, discharge behind horizontal connecting pipe 3 and the second collector pipe 6, start vibrator 5 simultaneously, controller 11 starts corresponding vibration power according to different construction demand adjustment vibrator 5, vibrator 5 causes disturbance destruction to the soil body on every side through the vibration, the soil body will improve drainage speed under the disturbance state, thereby improve vacuum preloading speed, the reduction of erection time.
After the soft soil foundation vacuum preloading treatment is completed, the horizontal drainage subsystem and the vertical drainage subsystem are gradually removed, and holes left on the foundation after the vertical drainage pipe 4 is extracted can be subjected to grouting reinforcement treatment.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. The utility model provides a three-dimensional disturbance formula vacuum preloading ground processing system which characterized in that: comprises a horizontal drainage subsystem and a vertical drainage subsystem; the horizontal drainage subsystem comprises a plurality of horizontal drainage pipes horizontally arranged on soil and a first water collecting pipe, and the plurality of horizontal drainage pipes are communicated with the head end of the first water collecting pipe; the vertical drainage subsystem comprises a plurality of horizontal connecting pipes horizontally arranged on soil, a plurality of vertical drainage pipes, a vibration device and a second water collecting pipe, wherein the top ends of the vertical drainage pipes are connected to the corresponding horizontal connecting pipes and inserted into foundation soil, the vibration device is arranged at the bottom end of each vertical drainage pipe, and the horizontal connecting pipes are communicated with the head ends of the second water collecting pipes; the end of first collector pipe and second collector pipe all be connected with the vacuum pump that corresponds, all be provided with along the axial on horizontal drain pipe and the vertical drain pipe and permeate water the hole, vertical drain pipe and horizontal connection intraductal all be provided with waterproof wire, vibrator on the vertical drain pipe bottom is connected with external controller through the waterproof wire that corresponds vertical drain pipe and horizontal connection pipe and is realized the control and start.
2. The three-dimensional disturbance type vacuum preloading foundation treatment system according to claim 1, wherein: the water collecting device is characterized in that the horizontal water discharging pipes are transversely and longitudinally arranged and are mutually communicated to form a latticed communicated tubular structure, a water discharging port is arranged on the latticed communicated tubular structure, and the water discharging port is communicated with the head end of the first water collecting pipe.
3. The three-dimensional disturbance type vacuum preloading foundation treatment system according to claim 1, wherein: a plurality of horizontal connecting pipes be parallel to each other, and all be connected with the vertical drain pipe that equals quantity on every horizontal connecting pipe, the vertical drain pipe that connects on every horizontal connecting pipe evenly arranges along horizontal connecting pipe's axial, every horizontal connecting pipe's one end is enclosed construction, every horizontal connecting pipe's the other end all communicates with the head end of second collector pipe.
4. The three-dimensional disturbance type vacuum preloading foundation treatment system according to claim 1, wherein: horizontal drain pipe and vertical drain pipe be the bilayer pipe structure, all set up along axial evenly distributed's the hole of permeating water on the bilayer pipe, the equal sealing connection in both ends of bilayer pipe all is provided with between the bilayer pipe and filters the filler.
5. The system according to claim 4, wherein the disturbing vacuum pre-pressing foundation treatment system comprises: the filtering filler is plastic fiber filler and is used for filtering soil particles in water.
6. The three-dimensional disturbance type vacuum preloading foundation treatment system according to claim 1, wherein: the waterproof conducting wire comprises a water-stop pipe arranged in the vertical water drainage pipe or the horizontal connecting pipe and a conducting wire penetrating through the water-stop pipe.
7. The three-dimensional disturbance type vacuum preloading foundation treatment system according to claim 1, wherein: the foundation soil on all be provided with first layer geotechnological weaving, horizontal drainage pipe and the horizontal connecting pipe of vertical drainage subsystem of horizontal drainage subsystem all set up on first layer geotechnological weaving, horizontal drainage pipe and the horizontal connecting pipe of vertical drainage subsystem on all covered second floor geotechnological weaving and seal membrane.
8. The three-dimensional disturbance type vacuum preloading foundation treatment system according to claim 1, wherein: the soil on the position that lies in first collector pipe and second collector pipe all be provided with the counter-pressure ditch.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011438384.7A CN112459043A (en) | 2020-12-10 | 2020-12-10 | Three-dimensional disturbance type vacuum preloading foundation treatment system |
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| CN202011438384.7A CN112459043A (en) | 2020-12-10 | 2020-12-10 | Three-dimensional disturbance type vacuum preloading foundation treatment system |
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| CN112459043A true CN112459043A (en) | 2021-03-09 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113882355A (en) * | 2021-10-29 | 2022-01-04 | 华侨大学 | Vacuum drainage sedimentation system and method for treating soft soil by utilizing ultrasonic waves |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20010067815A (en) * | 2001-03-30 | 2001-07-13 | 김동민 | Soil improvement structure and method viscous soil reclaimed land |
| CN101831902A (en) * | 2010-05-27 | 2010-09-15 | 曾国海 | Drainage consolidation method without keeping drainage channel after work of soft soil foundation |
| CN102220756A (en) * | 2011-04-15 | 2011-10-19 | 中港基业（北京）岩土技术有限公司 | Long-short plastic drainage plates-combined secondary vacuum preloading foundation processing method |
| CN104895046A (en) * | 2015-06-04 | 2015-09-09 | 浙江开天工程技术有限公司 | Soft-soil foundation treatment method combining disturbance at different depths with drainage consolidation |
| CN207452877U (en) * | 2017-11-15 | 2018-06-05 | 广西大学 | A kind of vibration accelerates drainage arrangement |
| KR20190044390A (en) * | 2017-10-20 | 2019-04-30 | 주식회사 홍익 | Suction drain method for soft ground stabilization |
| CN214219623U (en) * | 2020-12-10 | 2021-09-17 | 中铁四局集团第一工程有限公司 | Three-dimensional disturbance type vacuum preloading foundation treatment system |
-
2020
- 2020-12-10 CN CN202011438384.7A patent/CN112459043A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20010067815A (en) * | 2001-03-30 | 2001-07-13 | 김동민 | Soil improvement structure and method viscous soil reclaimed land |
| CN101831902A (en) * | 2010-05-27 | 2010-09-15 | 曾国海 | Drainage consolidation method without keeping drainage channel after work of soft soil foundation |
| CN102220756A (en) * | 2011-04-15 | 2011-10-19 | 中港基业（北京）岩土技术有限公司 | Long-short plastic drainage plates-combined secondary vacuum preloading foundation processing method |
| CN104895046A (en) * | 2015-06-04 | 2015-09-09 | 浙江开天工程技术有限公司 | Soft-soil foundation treatment method combining disturbance at different depths with drainage consolidation |
| KR20190044390A (en) * | 2017-10-20 | 2019-04-30 | 주식회사 홍익 | Suction drain method for soft ground stabilization |
| CN207452877U (en) * | 2017-11-15 | 2018-06-05 | 广西大学 | A kind of vibration accelerates drainage arrangement |
| CN214219623U (en) * | 2020-12-10 | 2021-09-17 | 中铁四局集团第一工程有限公司 | Three-dimensional disturbance type vacuum preloading foundation treatment system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113882355A (en) * | 2021-10-29 | 2022-01-04 | 华侨大学 | Vacuum drainage sedimentation system and method for treating soft soil by utilizing ultrasonic waves |
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