CN1793520A - Structure of level water drainage for draining solidifying rainforcing soft foundition and construction method thereof - Google Patents
Structure of level water drainage for draining solidifying rainforcing soft foundition and construction method thereof Download PDFInfo
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- CN1793520A CN1793520A CN 200610037622 CN200610037622A CN1793520A CN 1793520 A CN1793520 A CN 1793520A CN 200610037622 CN200610037622 CN 200610037622 CN 200610037622 A CN200610037622 A CN 200610037622A CN 1793520 A CN1793520 A CN 1793520A
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- drainage body
- flexible porous
- french drain
- porous tube
- plastics french
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Abstract
The invention provides new type horizontal drainage structure and its construction method. It is used plastic blind ditch or soft water through pipe to replace sand bedding course. And it is aimed at the current drainage consolidation method which has the problem that the cost is high and the construction period is influenced by material supplying. It has the advantages of simple structure and convenient construction. And it can ensure the same effect as common sand bedding course. But its cost can reduce 5-15 yuan/m <SUP>2</SUP>. It can be applied to sand short supplying and expensive area popularization.
Description
Technical field
The present invention relates to a kind of foundation structure and job practices thereof, consolidation especially vacuum method handle in the soft basic engineering the structure and the job practices thereof of requisite novel horizontal drainage body.
Background technology
At present, the certain thickness sand cushion of normal employing is as the horizontal drainage body in vacuum method, and sand cushion mainly plays horizontal drainage and transmits vacuum.The sand cushion raw material is simple, easy construction, and quality is controlled easily, but the pointed foreign material that wherein are mixed with must be removed totally when laying, in case poke diaphragm seal.The area of, convenient transportation abundant at the sand material, the sand valency is also more cheap, and adopting sand cushion is science, economically and reasonably as the horizontal drainage body.But engineerings such as many regional building highways in China, problems such as the sand material lacks, adopts that sand difficulty, sand high price are expensive, the construction of transportation inconvenience and sand cushion is subjected to weather effect are still very outstanding, and directly influence even restricted the progress of engineering construction, thereby increased the cost of investment of engineering construction.
Plastics french drain and flexible porous tube are the novel adrainage materials that ground commonly used on the present engineering is handled usefulness.
External plastics french drain produces and develops and be applied in the engineering in the seventies in 20th century, and China carries out the development of plastics french drain in the mid-80, develops the first generation product beginning of the nineties.The plastics french drain is made up of plastics french drain body and outsourcing non-woven geotextile filter membrane two large divisions.Plastics french drain core body is the three-D space structure that the polyolefin macromolecular material is made through special forming technology then through hot melt extrusion plastic tow.The special material of plastics french drain and design feature have determined it to have some than traditional french drain and the more superior engineering properties of other materials: surperficial percent opening height, and the performance of catchmenting is strong; Porosity is big, and drainage is good; Voltage endurance capability is strong; Pliability is good, and it is strong to adapt to the soil deformation ability; In light weight, processing is simple, easy construction.At present, the plastics french drain is in the application of China and begins to promote and further improve and development stages.It is mainly used in the following aspects at present: the large tracts of land place: as port works blast-filled ground, athletic ground; Highway and speedway; Subway, highway tunnel and underground passage; Side slope and bank slope; Retaining wall; Dam construction etc.
And flexible porous tube is with through preservative treatment and outer cover spring steel wire coil that polyvinyl chloride (PVC) or other materials make topping as skeleton, is that a kind of compound geotechnique that the tube wall lapping is formed synthesizes tubing with permeability geotextile and polymer fiber braid.At present, flexible porous tube is mainly used in embankment on soft soil substrate transverse drainage, railway bed, landslide regulation, supporting construction draining etc.
Plastics french drain and flexible porous tube are novel geosynthetics, in common subgrade drainage, yard drain, obtained application, but according to the knowledge of the applicant, be not applied to both at home and abroad discharging consolidation as yet and particularly replace transportation inconvenience in the ground process field of vacuum prepressing reinforcement soft base, the higher relatively horizontal sand cushion of price is used.
Summary of the invention
The objective of the invention is at existing consolidation particularly vacuum method handle that the sand cushion as the horizontal drainage body causes that owing to there is lack of raw materials engineering cost height, construction period are subjected to raw material supply and affected problem in the soft basic engineering, provide a kind of new utilize plastics french drain or flexible porous tube to replace structure and the job practices thereof of sand cushion as the novel horizontal drainage body of horizontal drainage body.
Technical scheme of the present invention is:
A kind of structure of level water drainage for draining solidifying rainforcing soft foundition, it is characterized in that it is made up of flexible porous tube or plastics french drain between vertical drainage body and the parallel row or column that is embedded in vertical drainage body, described vertical drainage body links to each other with described flexible porous tube or plastics french drain and forms drainage channel, and flexible porous tube or plastics french drain are responsible for to link to each other with suction and are formed drainage channel.
The job practices of above-mentioned novel horizontal drainage body may further comprise the steps:
A, vertical drainage body is beaten in the soft foundation of nuzzling by row distance and the line-spacing set;
B, be unit with the row or column of vertical drainage body, between adjacent row or column, excavate out the mounting groove that matches with flexible porous tube or plastics french drain size, parallel, the flexible porous tube or the plastics french drain that wrap up with filter ruffle are in advance put into the mounting groove of being opened with the row or column of described vertical drainage body;
C, vertical drainage body is linked to each other with flexible porous tube or plastics french drain, make and form drainage channel between the two;
D, suction be responsible for hold successfully with vertical drainage body line-spacing or row pitch spacing unanimity, aperture and flexible porous external diameter of pipe or plastics french drain internal diameter are identical to boring a hole, flexible porous tube or plastics french drain be responsible for to be communicated with and fixedly to make also forming drainage channel between them with suction, flexible porous tube or plastics french drain that described mounting groove reaches wherein installation promptly constitute horizontal drainage body of the present invention.
The present invention has also further taked following technical measures:
Spreading has pure medium coarse sand in described mounting groove, and its quantity is to cover flexible porous tube or the plastics french drain is as the criterion, and is unobstructed to guarantee draining.According to actual engineering also spreading medium coarse sand not.
On described horizontal drainage body, be equipped with diaphragm seal, colour bar cloth or geotextiles.
The width of described mounting groove is 8～15 centimetres, and the degree of depth also is 8～15 centimetres, and the width of mounting groove and the degree of depth can be adjusted according to actual engineering.
Described vertical drainage body is plastic draining board or flexible porous tube.
The present invention has the following advantages:
Horizontal drainage body structure of the present invention is simple, and easy construction is guaranteeing that vacuum pressure reaches aspect designing requirement and the ground stabilization effect, compare with the normal sands bed course and to have the effect of being equal to, but alternative normal sands bed course saves the chimney filter in the drainage system, reduces by 5～15 yuan/m of construction costs
2, be suitable for sand material area in short supply, expensive and promote the use of.
Description of drawings
Fig. 1 is a flexible porous tube structural representation of the present invention.
Fig. 2 is a horizontal drainage body vacuum prepressing device generalized section of the present invention.
Fig. 3 is that horizontal drainage body construction of the present invention is laid floor map.
Fig. 4 is a horizontal drainage body construction laying structure sectional schematic diagram of the present invention.
Among Fig. 1-4: the 1st, vertical drainage body, the 2nd, flexible porous tube or plastics french drain, the 3rd, suction is responsible for, the 4th, vacuum dehydration pump, the 5th, the liner steel wire of plastics french drain, the 6th, the pervious layer of plastics french drain, the 7th, the filtration beds of plastics french drain, the 8th, the coating of plastics french drain, the 9th, cuticula geotextiles, the 10th, diaphragm seal, the 11st, sealing ditch, the 12nd, flap valve, the 13rd, rubber tube, the 14th, fastener material, L are the row distance between the vertical drainage body, and D is the line-spacing between the vertical drainage body.
The specific embodiment
The present invention is further illustrated below in conjunction with accompanying drawing and application example.
Shown in Fig. 1,2,3,4.
A kind of novel consolidation particularly vacuum method is handled soft base novel horizontal drainage body structure, it by and the parallel row or column that is embedded in vertical drainage body 1 between flexible porous tube or plastics french drain 2 form, described vertical drainage body 1 or be plastic draining board or flexible porous tube, it links to each other with described flexible porous tube or plastics french drain 2 and forms water stream channel, flexible porous tube or plastics french drain 2 link to each other with the suction person in charge 3 and form water stream channel, and the suction person in charge 3 water side links to each other with vacuum dehydration pump 4.
Wherein, the plastics french drain can be selected external diameter 120mm internal diameter 50mm hollow circular plastics french drain for use, and the desirable diameter of flexible porous tube is 50mm.Concrete size should require to carry out computational analysis by handbook or formula according to engineering construction and determine.
Above-mentioned horizontal drainage body can adopt following job practices to construct:
(1) plastic draining board 1 is cleaned out the face of land, flatten after having set by the line-spacing of setting, row;
(2) the wide about 8～15cm of excavation in the middle of two plastic removal material band drains 1, the mounting groove of dark about 8～15cm is gone into the flexible porous tube or plastics french drain 2 traverses that wrap up with filter ruffle in advance in the mounting groove; The quantity of mounting groove should equal the line number of plastic draining board 1 or the columns number divided by 2 gained at least;
(3) plastic draining board 1 is close to and is wrapped up outward and the moisture content of being inhaled by plastic draining board 1 is flowed into swimmingly be beneficial in flexible porous tube or the plastics french drain 2 unified the discharge in the ground;
(4) suction be responsible for hold successfully on 3 identical with band drain 1 spacing unanimity, aperture and flexible porous external diameter of pipe or plastics french drain internal diameter to boring a hole, flexible porous tube or plastics french drain 2 are communicated with the suction person in charge 3, external application filter cloth parcel is tight, the reusable lead silk fastens, in case earth enters, thereby the underground water of collecting from flexible porous tube or plastics french drain 2 is responsible for outside the 3 sucking-off grounds by suction;
(5) lay the cleaning face of land that finishes, enter the next procedure construction, as laying diaphragm seal, vacuumizing etc.
Claims (6)
1, a kind of structure of level water drainage for draining solidifying rainforcing soft foundition, it is characterized in that it is made up of flexible porous tube or plastics french drain between vertical drainage body and the parallel row or column that is embedded in vertical drainage body, described vertical drainage body links to each other with described flexible porous tube or plastics french drain and forms drainage channel, and flexible porous tube or plastics french drain are responsible for to link to each other with suction and are formed drainage channel.
2, the job practices of the described novel horizontal drainage body of a kind of claim 1 is characterized in that it may further comprise the steps:
A, vertical drainage body is beaten in the soft foundation of nuzzling by row distance and the line-spacing set;
B, be unit with the row or column of vertical drainage body, between adjacent row or column, excavate out the mounting groove that matches with flexible porous tube or plastics french drain size, parallel, the flexible porous tube or the plastics french drain that wrap up with filter ruffle are in advance put into the mounting groove of being opened with the row or column of described vertical drainage body;
C, vertical drainage body is linked to each other with flexible porous tube or plastics french drain, make and form drainage channel between the two;
D, suction be responsible for hold successfully with vertical drainage body line-spacing or row pitch spacing unanimity, aperture and flexible porous external diameter of pipe or plastics french drain internal diameter are identical to boring a hole, flexible porous tube or plastics french drain be responsible for to be communicated with and fixedly to make also forming drainage channel between them with suction, flexible porous tube or plastics french drain that described mounting groove reaches wherein installation promptly constitute horizontal drainage body of the present invention.
3, the job practices of novel horizontal drainage body according to claim 2 is characterized in that spreading has pure medium coarse sand in described mounting groove, and its quantity is to cover flexible porous tube or the plastics french drain is as the criterion, and is unobstructed to guarantee draining.
4, the job practices of novel horizontal drainage body according to claim 2 is characterized in that being equipped with diaphragm seal, colour bar cloth or geotextiles on described horizontal drainage body.
5, the job practices of novel horizontal drainage body according to claim 2, the width that it is characterized in that described mounting groove is 8～15 centimetres, and the degree of depth also is 8～15 centimetres, and the width of mounting groove and the degree of depth can be adjusted according to actual engineering.
6, the job practices of novel horizontal drainage body according to claim 2 is characterized in that described vertical drainage body is plastic draining board or flexible porous tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610037622 CN1793520A (en) | 2006-01-05 | 2006-01-05 | Structure of level water drainage for draining solidifying rainforcing soft foundition and construction method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610037622 CN1793520A (en) | 2006-01-05 | 2006-01-05 | Structure of level water drainage for draining solidifying rainforcing soft foundition and construction method thereof |
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| CN1793520A true CN1793520A (en) | 2006-06-28 |
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| CN 200610037622 Pending CN1793520A (en) | 2006-01-05 | 2006-01-05 | Structure of level water drainage for draining solidifying rainforcing soft foundition and construction method thereof |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009070984A1 (en) * | 2007-11-02 | 2009-06-11 | Yonggen Liang | Vacuum preloading method without drain sand cushion layer |
| CN101225656B (en) * | 2008-01-31 | 2010-09-15 | 中交第四航务工程局有限公司 | Method for rapidly reinforcing ultra-soft soil superficial layer |
| CN102493427A (en) * | 2011-11-16 | 2012-06-13 | 河海大学 | Rapid drainage and rapid consolidation construction method for yard silt by using solidified soil as surcharge |
| CN102912787A (en) * | 2012-11-14 | 2013-02-06 | 天津港建设公司 | Vacuum preloading method for fine sand mats and filter tube sealing |
| CN104652409A (en) * | 2014-12-24 | 2015-05-27 | 中交天津港湾工程研究院有限公司 | Continuous forced drainage and compaction combined soft foundation treatment technical method |
| CN106869107A (en) * | 2017-02-28 | 2017-06-20 | 河北工业大学 | The novel solid drainage system and its dewatering construction method of a kind of reinforcing soft ground |
| CN110714456A (en) * | 2019-09-29 | 2020-01-21 | 温州大学 | Novel drainage plate structure based on traditional drainage plate upper quick-mounting transverse drainage body and construction method thereof |
-
2006
- 2006-01-05 CN CN 200610037622 patent/CN1793520A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009070984A1 (en) * | 2007-11-02 | 2009-06-11 | Yonggen Liang | Vacuum preloading method without drain sand cushion layer |
| CN101225656B (en) * | 2008-01-31 | 2010-09-15 | 中交第四航务工程局有限公司 | Method for rapidly reinforcing ultra-soft soil superficial layer |
| CN102493427A (en) * | 2011-11-16 | 2012-06-13 | 河海大学 | Rapid drainage and rapid consolidation construction method for yard silt by using solidified soil as surcharge |
| CN102912787A (en) * | 2012-11-14 | 2013-02-06 | 天津港建设公司 | Vacuum preloading method for fine sand mats and filter tube sealing |
| CN104652409A (en) * | 2014-12-24 | 2015-05-27 | 中交天津港湾工程研究院有限公司 | Continuous forced drainage and compaction combined soft foundation treatment technical method |
| CN104652409B (en) * | 2014-12-24 | 2016-08-24 | 中交天津港湾工程研究院有限公司 | A kind of forced-ventilated water continuously combines the close soft foundation processing technology method of rammer |
| CN106869107A (en) * | 2017-02-28 | 2017-06-20 | 河北工业大学 | The novel solid drainage system and its dewatering construction method of a kind of reinforcing soft ground |
| CN110714456A (en) * | 2019-09-29 | 2020-01-21 | 温州大学 | Novel drainage plate structure based on traditional drainage plate upper quick-mounting transverse drainage body and construction method thereof |
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