CN105442524B - Soft foundation processing device and construction method - Google Patents

Soft foundation processing device and construction method Download PDF

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Publication number
CN105442524B
CN105442524B CN201510773799.2A CN201510773799A CN105442524B CN 105442524 B CN105442524 B CN 105442524B CN 201510773799 A CN201510773799 A CN 201510773799A CN 105442524 B CN105442524 B CN 105442524B
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CN
China
Prior art keywords
collector pipe
pipe
fillter section
water level
tube wall
Prior art date
Application number
CN201510773799.2A
Other languages
Chinese (zh)
Other versions
CN105442524A (en
Inventor
李媛媛
郭斌
刘将
陈鹏
贾世波
Original Assignee
青岛理工大学(临沂)
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Application filed by 青岛理工大学(临沂) filed Critical 青岛理工大学(临沂)
Priority to CN201510000120.6A priority Critical patent/CN104532825B/en
Priority to CN201510773799.2A priority patent/CN105442524B/en
Publication of CN105442524A publication Critical patent/CN105442524A/en
Application granted granted Critical
Publication of CN105442524B publication Critical patent/CN105442524B/en

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Classifications

    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D3/00Improving or preserving soil or rock, e.g. preserving permafrost soil
    • E02D3/02Improving by compacting
    • E02D3/10Improving by compacting by watering, draining, de-aerating or blasting, e.g. by installing sand or wick drains
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D2600/00Miscellaneous
    • E02D2600/10Miscellaneous comprising sensor means

Abstract

A kind of rapidly solidified device of subgrade, including collector pipe and the filter for being arranged at collector pipe, the filter includes the inlet opening on collector pipe fillter section tube wall, it is arranged on put more energy into muscle and the geotextiles being wrapped in outside muscle of putting more energy on the outside of fillter section tube wall, the inlet opening includes the water inlet and the water inlet positioned at collector pipe fillter section tube wall upper end positioned at collector pipe fillter section tube wall lower end, the water inlet positioned at collector pipe fillter section tube wall lower end is the hole for being not provided with closure elements, the water inlet positioned at collector pipe fillter section tube wall upper end is the hole for setting closure elements.

Description

Soft foundation processing device and construction method

Technical field

It is rapidly solidified more particularly, to a kind of subgrade the invention belongs to Soft Soil Subgrade Treatment Techniques field in architectural engineering Device.

Background technology

Soft soil foundation is a kind of special foundation for referring to the higher soft layer formation of low intensity, decrement, typically has and holds The features such as power is low, water content is high, soft soil layer is deep is carried, thus has to pass through basement process rear and be can be used.As China is existing The quickening of generationization process, during (coastal) urban construction, substantial amounts of soft soil foundation needs processing

The conventional processing method of current weak soil mainly has vacuum method, preloading, Vacuum-loading Pre-pressing Method, Three kinds of methods are to use static(al) draining concretion method, it is necessary to wait mud face to solidify or first lay GSZ, geotextiles, then Fill out more than 0.8m sand bedding courses, after there is some strength after mud top layer, artificial and plant equipment could after progress thereon road work Sequence is constructed, and causes the required duration longer, place intensity is not high.On the other hand, when place in order that dredging mud is in 80kPa Negative pressure of vacuum will spend the longer pumpdown time when being issued to enough consolidation indexs, and be used as the modeling of vertical drainage system Material drain bar makes effective pumpdown time fall sharply the serious smear effect of drain bar because of the dredging mud that ultra-fine soil particle is constituted, This conflict will unavoidably occur, so as to have a strong impact on the consolidation effect of vacuum method.

In the prior art for rapidly solidified soft base, such as 201110258093.4, use cuff immersible pump in collector pipe Drain pipe system, collector pipe and drainpipe formation dual pipe, in the presence of vavuum pump so that work of the soft base in atmospheric pressure Moisture and enter collector pipe with lower rapid precipitation, quickly excluded by immersible pump and drainpipe, reach the effect of rapidly solidified soft base Really.But the rapidly solidified device of soft base of the prior art has the disadvantage that:1st, at draining initial stage, in soft base water content compared with Height, the water into collector pipe is more than diving pump displacement, makes water level rapid increase in collector pipe, may be inhaled into vavuum pump, Influence the vacuum efficiency of pump, in some instances it may even be possible to damage vavuum pump;2nd, in the draining latter end time, because water content is reduced in soft base, enter Collector pipe is slower, the water level in collector pipe is increased slow, the water level in collector pipe is reached below warning line, so that immersible pump It is stopped, but residual water is not drained also completely in soft base.

The content of the invention

The invention provides a kind of rapidly solidified device of subgrade and its construction method, the residual water in soft base can be use up It may discharge more, and with not interfering with vavuum pump performance.

As one aspect of the present invention there is provided a kind of rapidly solidified device of subgrade, including collector pipe and it is arranged at The filter of collector pipe, the filter include collector pipe fillter section tube wall on inlet opening, be arranged on fillter section tube wall It is less than the bore that catchments provided with an external diameter in put more energy into muscle and the geotextiles being wrapped in outside muscle of putting more energy into outside, the collector pipe Drainpipe, the upper end mouth of pipe of the collector pipe is provided with the nozzle device for being used for sealing collector pipe, the upper end mouth of pipe of the drainpipe The nozzle device is connected, the lower end mouth of pipe of the drainpipe is connected with immersible pump, and the collector pipe is provided with can be by collector pipe The vacuum hole vacuumized and the unidirectional hole with extraneous one-way conduction, the vacuum hole are connected with vavuum pump, the collector pipe lower end For level cross-sectionn diminishing shape from top to bottom, the immersible pump is located at the collector pipe lower end.

Preferably, the inlet opening is included positioned at the water inlet of collector pipe fillter section tube wall lower end and positioned at collector pipe filtering The water inlet of Duan Guanbi upper ends, the water inlet positioned at collector pipe fillter section tube wall lower end is the hole for being not provided with closure elements, The water inlet positioned at collector pipe fillter section tube wall upper end is the hole for setting closure elements.

Preferably, the closure elements close the setting closure elements when the water level of collector pipe is higher than specific water level Hole.

Preferably, the closure elements are the closure with flexible member, when the water level of collector pipe is less than specific water level, Due to the suction of vavuum pump so that closure is opened, the hole for setting closure elements is opened, when the water level in collector pipe is higher than During specific water level, due to the screen resilience of hydraulic pressure and flexible member in itself so that closure is closed.

Preferably, the rapidly solidified device of the subgrade also includes the level measurement device being arranged in nozzle device, described Level measurement device is measured for the water level of collector pipe, when the water level in collector pipe is higher than specific high threshold, stops institute Vavuum pump is stated, when the water level in collector pipe is reduced to specific Low threshold from specific high threshold, vavuum pump is restarted.It is preferred that Ground, the level measurement device is sonac, by the timing to water level reflectance ultrasound echo, and determines collector pipe In water level.

As another invention of the present invention there is provided the construction method of the rapidly solidified device of above-mentioned subgrade, it is wrapped Include following steps:1)Into one or more stake holes in soft base;2)The rapidly solidified device of the subgrade is put into stake holes;3) Collector pipe is vacuumized by vacuumizing hole with vavuum pump, makes soft subgrade soil reclaimed water under pressure by the mistake of collector pipe lower end Filter section enters collector pipe;4)The water entered in collector pipe is extracted using immersible pump, water is discharged to by drainpipe upper end It is extraneous;5)When the water level in collector pipe is higher than specific high threshold, stop the vavuum pump, when the water level in collector pipe is from specific When high threshold is reduced to specific Low threshold, vavuum pump is restarted;6)When the water level in collector pipe reaches warning line lower limit, Immersible pump and vavuum pump are automatically stopped work, and construction terminates.

Brief description of the drawings

Accompanying drawing 1 is the structural representation of one embodiment of the invention;

Accompanying drawing 2 is the structural representation of another embodiment of the present invention.

Embodiment

In order to facilitate the understanding of the purposes, features and advantages of the present invention, it is below in conjunction with the accompanying drawings and specific real Applying mode, the present invention is further detailed explanation.

Referring to Fig. 1, one embodiment of the rapidly solidified device of subgrade of the invention, including collector pipe 1 and collection is arranged at The filter of water pipe 1, the filter include collector pipe fillter section tube wall on inlet opening 8, be arranged on fillter section tube wall It is less than collector pipe 1 provided with an external diameter in put more energy into muscle 9 and the geotextiles 7 for being wrapped in the outside of muscle 9 of putting more energy into outside, the collector pipe 1 The drainpipe 3 of internal diameter, the upper end mouth of pipe of collector pipe 1 is provided with the nozzle device 2 for being used for sealing collector pipe, the upper pipes of drainpipe 3 Mouth connects the nozzle device 2, and nozzle device 2 is provided with inside sealing flange, sealing flange with the upper end mouth of pipe of collector pipe 1 and is provided with sealing Packing ring 6, the lower end mouth of pipe of drainpipe 3 is connected with immersible pump 4, and collector pipe 1 is provided with the vacuum hole that will can be vacuumized in collector pipe 1 22 and the unidirectional hole 21 with extraneous one-way conduction, the inner 23 in unidirectional hole 21 is connected with drainpipe 3, and outer end 24 connects with check valve Connect, vacuum hole 22 is connected with vavuum pump, collector pipe lower end 12 is level cross-sectionn diminishing shape from top to bottom, described latent Water pump 4 is located at the collector pipe lower end 12.By the technical scheme in the present embodiment, because collector pipe lower end 12 is horizontal cross-section The shape that face area is gradually reduced, compared with the different technical scheme in cross section in the prior art so that enter same in inlet opening During the water of sample, the horizontal plane of collector pipe lower end is higher, so as to when draining latter stage, water inlet was less, can also keep water in collector pipe Position is higher than the warning line upper limit being stopped, so that draining is more thorough.

Referring to Fig. 2, another one embodiment of the rapidly solidified device of ground of the invention, including collector pipe 1 and setting In the filter of collector pipe 1, the filter includes inlet opening 8 on collector pipe fillter section tube wall, is arranged on fillter section It is less than in put more energy into muscle 9 and the geotextiles 7 for being wrapped in the outside of muscle 9 of putting more energy on the outside of tube wall, the collector pipe 1 provided with an external diameter and catchments The drainpipe 3 of the internal diameter of pipe 1, the upper end mouth of pipe of collector pipe 1 is provided with the nozzle device 2 for being used for sealing collector pipe, the upper end of drainpipe 3 The mouth of pipe connects the nozzle device 2, and nozzle device 2 is provided with inside sealing flange, sealing flange provided with close with the upper end mouth of pipe of collector pipe 1 Seal washer 6, the lower end mouth of pipe of drainpipe 3 is connected with immersible pump 4, and collector pipe 1 is provided with the vacuum that will can be vacuumized in collector pipe 1 Hole 22 and the unidirectional hole 21 with extraneous one-way conduction, the inner 23 in unidirectional hole 21 are connected with drainpipe 3, and outer end 24 connects with check valve Connect, vacuum hole 22 is connected with vavuum pump, collector pipe lower end 12 is level cross-sectionn diminishing shape from top to bottom, described latent Water pump 4 is located at the collector pipe lower end 12.Wherein, inlet opening 8 includes the water inlet positioned at collector pipe fillter section tube wall lower end 12 With the water inlet positioned at collector pipe fillter section tube wall upper end 11, the water inlet positioned at collector pipe fillter section tube wall lower end 12 is not set The hole of closure elements is put, the water inlet positioned at collector pipe fillter section tube wall upper end 11 is the hole for setting closure elements.The closing Element closes the hole of the setting closure elements when the water level of collector pipe is higher than specific water level.Closure elements can use band The closure of flexible member, when the water level of collector pipe is less than specific water level, due to the suction of vavuum pump so that closure is beaten Open, the hole for setting closure elements is opened, when the water level in collector pipe is higher than specific water level, due to hydraulic pressure and elasticity member The screen resilience of part in itself so that closure is closed.By the technical scheme in the present embodiment, make the water level in collector pipe higher than spy When determining water level, enclosure portion water inlet slows down the flow into collector pipe reclaimed water, so as to avoid at draining initial stage, soft base is included Water is higher, and the water into collector pipe is more than diving pump displacement, makes water level rapid increase in collector pipe and is inhaled into vacuum Pump.

It is preferred that, in above-described embodiment, the level measurement device 25 in nozzle device, level measurement device can be arranged on 25 measure for the water level of collector pipe 1, when the water level in collector pipe 1 is higher than specific high threshold, stop the fortune of vavuum pump OK, when the water level in collector pipe is reduced to specific Low threshold from specific high threshold, vavuum pump is restarted.It is preferred that, water level Measurement apparatus 25 is sonac, by the timing to water level reflectance ultrasound echo, and determines the water level in collector pipe.

As another part of the present invention there is provided the construction method of the rapidly solidified device of above-mentioned subgrade, it is wrapped Include following steps:1)Into one or more stake holes in soft base;2)The rapidly solidified device of the subgrade is put into stake holes;3) Collector pipe is vacuumized by vacuumizing hole with vavuum pump, makes soft subgrade soil reclaimed water under pressure by the mistake of collector pipe lower end Filter section enters collector pipe;4)The water entered in collector pipe is extracted using immersible pump, water is discharged to by drainpipe upper end It is extraneous;5)When the water level in collector pipe is higher than specific high threshold, stop the vavuum pump, when the water level in collector pipe is from specific When high threshold is reduced to specific Low threshold, vavuum pump is restarted;6)When the water level in collector pipe reaches warning line lower limit, Immersible pump and vavuum pump are automatically stopped work, and construction terminates.

It the above is only the preferred embodiment of the present invention, protection scope of the present invention is not limited merely to above-described embodiment, All technical schemes belonged under thinking of the present invention belong to protection scope of the present invention.For the ordinary skill people of the art For member, some improvements and modifications without departing from the principles of the present invention should be regarded as falling into protection scope of the present invention.

Claims (3)

1. a kind of rapidly solidified device of subgrade, including collector pipe and the filter for being arranged at collector pipe, the filter Put more energy into including the inlet opening on collector pipe fillter section tube wall, the muscle and being wrapped in of putting more energy into being arranged on the outside of fillter section tube wall outside muscle Geotextiles, be less than the drainpipe for the bore that catchments in the collector pipe provided with an external diameter, the upper end mouth of pipe of the collector pipe is set There is the nozzle device for sealing collector pipe, the upper end mouth of pipe of the drainpipe is connected under the nozzle device, the drainpipe End pipe mouth is connected with immersible pump, the collector pipe provided with can by the vacuum hole vacuumized in collector pipe and with extraneous one-way conduction Unidirectional hole, the vacuum hole is connected with vavuum pump, it is characterised in that:The collector pipe lower end be level cross-sectionn from top to bottom Diminishing shape, the immersible pump is located at the collector pipe lower end;The inlet opening includes being located at collector pipe fillter section pipe The water inlet of wall lower end and the water inlet positioned at collector pipe fillter section tube wall upper end, it is described to be located at collector pipe fillter section tube wall lower end Water inlet be the hole for being not provided with closure elements, the water inlet positioned at collector pipe fillter section tube wall upper end for set closing member The hole of part;The closure elements are the closure with flexible member, when the water level of collector pipe is less than specific water level, due to vacuum The suction of pump so that closure is opened, the hole for setting closure elements is opened, when the water level in collector pipe is higher than described specific During water level, due to the screen resilience of hydraulic pressure and flexible member in itself so that closure is closed.
2. a kind of construction method of the rapidly solidified device of subgrade described in claim 1:Comprise the following steps 1)In soft base Into one or more stake holes;2)The rapidly solidified device of the subgrade is put into stake holes;3)With vavuum pump by vacuumizing hole Collector pipe is vacuumized, soft subgrade soil reclaimed water is entered collector pipe by the fillter section of collector pipe lower end under pressure;4)Make The water entered in collector pipe is extracted with immersible pump, water is discharged to the external world by drainpipe upper end;5)When in collector pipe When water level is higher than specific high threshold, stop the vavuum pump, when the water level in collector pipe be reduced to from specific high threshold it is specific low During threshold value, vavuum pump is restarted.
3. construction method according to claim 2, it is characterised in that:Including step 6):When the water level in collector pipe reaches During warning line lower limit, immersible pump and vavuum pump are automatically stopped work, and construction terminates.
CN201510773799.2A 2015-01-02 2015-01-02 Soft foundation processing device and construction method CN105442524B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201510000120.6A CN104532825B (en) 2015-01-02 2015-01-02 A kind of rapidly solidified device of subgrade and construction method thereof
CN201510773799.2A CN105442524B (en) 2015-01-02 2015-01-02 Soft foundation processing device and construction method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201510773799.2A CN105442524B (en) 2015-01-02 2015-01-02 Soft foundation processing device and construction method

Related Parent Applications (1)

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CN105442524B true CN105442524B (en) 2017-10-10

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CN104849771B (en) * 2015-05-23 2017-07-14 河南省水利勘测有限公司 The exploration device and exploitation method of layer of ground soil in Geotechnical Engineering
CN106638554B (en) * 2017-01-05 2019-08-06 浙江大学宁波理工学院 The processing method of Soft Clay Foundation
CN107938645B (en) * 2017-12-18 2019-12-03 上海三航奔腾海洋工程有限公司 A kind of vacuum preconsolidation drainage and construction method
CN108931332A (en) * 2018-06-29 2018-12-04 中国二十冶集团有限公司 The detection method of peat soil soft soil foundation hydraulic pressure

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JP3776831B2 (en) * 2001-08-27 2006-05-17 和彦 坂本 Groundwater level lowering device
CN100491650C (en) * 2006-11-16 2009-05-27 上海隧道工程股份有限公司 Precipitation construction method for double-bushing vacuum deep well point
JP5132605B2 (en) * 2009-02-19 2013-01-30 株式会社竹中工務店 Air injecting device, air injecting system, and method for injecting air into ground
CN101666083A (en) * 2009-08-13 2010-03-10 林佳栋 Soft soil foundation treatment reinforcement method and device thereof
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CN105442524A (en) 2016-03-30
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Inventor after: Li Yuanyuan

Inventor after: Guo Bin

Inventor after: Liu Jiang

Inventor after: Chen Peng

Inventor after: Jia Shibo

Inventor before: Han Shaopeng

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