CN102359101A - Foundation treatment method for collapsible soil - Google Patents
Foundation treatment method for collapsible soil Download PDFInfo
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- CN102359101A CN102359101A CN2011102221289A CN201110222128A CN102359101A CN 102359101 A CN102359101 A CN 102359101A CN 2011102221289 A CN2011102221289 A CN 2011102221289A CN 201110222128 A CN201110222128 A CN 201110222128A CN 102359101 A CN102359101 A CN 102359101A
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Abstract
The invention relates to collapsible soil, in particular relates to a foundation treatment method for collapsible soil, and belongs to the technical field of building construction. The treatment method comprises the following steps of: digging holes in a foundation to be treated, and filling calcined lime in the holes. When the foundation has water, the collapsible soil is softened because partial soluble salt is lost, and the calcined lime is decomposed and expanded in water so that bearing capacity of the foundation does not decline.
Description
Technical field
The present invention relates to a kind of collapsible soil, be specifically related to a kind of method for processing foundation of collapsible soil, belong to technical field of building construction.
Background technology
The essential characteristic of collapsible soil is to contain great amount of soluble salt in the soil, and in a single day foundation soil runs into water, and these soluble-salts are just separated by water-soluble, soil body deliquescing, and the supporting capacity of foundation soil descends.The CN200610041776.3 disclosure of the Invention a kind of processing method of thick collapsed loess foundation, on ready-made ground processing layer, fill earlier one deck waterproof bed course, adopt that dirt is closely knit to be filled; Adopting coarse sand soil then is that material fills one deck water guide bed course on the waterproof bed course; On the water guide bed course, fill one deck bed course that blocks water, adopt the closely knit rammer of dirt to build; Around the ground processing layer, top and waterproof bed course junction enclose and build continuous cut-off wall, this cut-off wall and waterproof bed course be the sealing of ground processing layer, and be deep into non-settlement by soaking soil layer; Build inlet well being positioned at peripheral vertical the boring of cut-off wall, landfill sand wherein, inlet well penetrates the collapsible loess stratum, and is deep into non-settlement by soaking soil layer; Around ground, lay the horizontal aqueduct of a circle at the same horizontal plane of water guide bed course at last, this horizontal aqueduct is layed in inlet well top and and UNICOM mutual vertical with inlet well.The CN85100863 disclosure of the Invention handle salinized soil with giving bowssening in the construction work; This invention belongs to industry and handles with the ground in the civilian construction. and salinized soil is a kind of soil that contains more lyotropic salt; This soil has dilatancy, settlement by soaking and aggressivity; Building is had harm, and the processing method that in construction work, adopts at present has the shortcoming that cost is high, construction is complicated.The CN98117956.8 disclosure of the Invention impact rolling to reinforce wet and depressive loess foundation and embankment, impact rolling to reinforce wet and depressive loess foundation and embankment are that ground is handled new technology, the new technology with subgrade strengthening.Its main points are to adopt the high energy impact events compacting machine; Carrying out working continuously of impact-rolling on the ground or on the roadbed,, make foundation soil grinding compacting from top to bottom along with the increase of impact-rolling pass; Form the artificial thick-layer back-up coat of handling, to satisfy ground design bearing capacity and stable requirement.Also have a kind of vibratory drilling method CFG stake to eliminate ground settlement by soaking treatment technology, it is to have on the loess foundation of settlement by soaking, at first confirms the position of vibratory drilling method CFG stake, and the stake position is that equilateral triangle is arranged according to equilateral triangle, and adjacent pilespacing is from equating; Secondly confirm pilespacing, pilespacing is got 3～5 times of stake footpaths; Adopt the vibrator pipe sinking cast-in-place pile construction technology to construct at last.This invention can improve bearing capacity of foundation soil, eliminates the settlement by soaking of soil, reduction of erection time, cost saving.In sum, no matter be to adopt the waterproof bed course or adopt the high energy impact events compacting machine, carrying out working continuously of impact-rolling on the ground or on the roadbed; Along with the increase of impact-rolling pass, make foundation soil grinding compacting from top to bottom, form the artificial thick-layer back-up coat of handling; All there is its processing cost high; Weak points such as the equipment of employing is many for the processing of building site collapsible soil all the time, do not have good solution.
Summary of the invention
The objective of the invention is provides a kind of method for processing foundation of collapsible soil for overcoming the weak point of above-mentioned prior art.This processing method is in foundation soil, clocklike to bury quicklime in advance, and when in the ground water being arranged, collapsible soil can lose the part soluble-salt and deliquescing, and at this moment, quicklime is met water can decompose expansion, and foundation capability can not descended.
The present invention realizes with following technical scheme: a kind of method for processing foundation of collapsible soil is characterized in that: this processing method is included in borehole on the pending ground, in the hole landfill quicklime, specifically carry out as follows:
(1) adopt luoyang spade borehole on pending ground, the aperture is 300mm; Hole depth is 1500mm～2000mm; Hole centre distance is 1500mm～2000mm;
(2) adopt quicklime to fill, the quicklime particle diameter is unsuitable excessive, and maximum particle diameter is not more than 60mm; With soil or sand stuff up a crack, fill closely knit when filling with assurance; While filling tamping; Downward 300mm～500mm fills closely knit with clay from the aperture;
(3) after the said quicklime of step (2) is meant that limestone is through the calcining kiln discharge, without the block lime of slaking.
Advantage of the present invention is: this processing method is scientific and reasonable; Make full use of local resources, in foundation soil, clocklike bury quicklime in advance, when in the ground water being arranged; Collapsible soil can lose the part soluble-salt and deliquescing; At this moment, quicklime is met water can decompose expansion, and foundation capability can not descended.
The specific embodiment
Embodiment 1,
(1) adopt luoyang spade borehole on pending ground, the aperture is 300mm; Hole depth is 1500mm; Hole centre distance is 1500mm;
(2) adopt quicklime to fill, the quicklime particle diameter is unsuitable excessive, and maximum particle diameter is not more than 60mm; With soil or sand stuff up a crack, fill closely knit when filling with assurance; While filling tamping; Downward 300mm fills closely knit with clay from the aperture;
(3) after the said quicklime of step (2) is meant that limestone is through the calcining kiln discharge, without the block lime of slaking.
Embodiment 2,
(1) adopt luoyang spade borehole on pending ground, the aperture is 300mm; Hole depth is 1800mm; Hole centre distance is 1800mm;
(2) adopt quicklime to fill, the quicklime particle diameter is unsuitable excessive, and maximum particle diameter is not more than 60mm; With soil or sand stuff up a crack, fill closely knit when filling with assurance; While filling tamping; Downward 400mm fills closely knit with clay from the aperture;
(3) after the said quicklime of step (2) is meant that limestone is through the calcining kiln discharge, without the block lime of slaking.
Embodiment 3,
Certain power station engineering; Be seated on the collapsible loess foundation, through geological prospecting, bearing capacity can meet the demands; For avoiding collapsible loess foundation bearing capacity decline in use; Used the method for processing foundation of collapsible soil of the present invention, engineering is all normally used so far, has stood test for many years.
Claims (1)
1. the method for processing foundation of a collapsible soil is characterized in that: this processing method is included in borehole on the pending ground, in the hole landfill quicklime, specifically carry out as follows:
(1) adopt luoyang spade borehole on pending ground, the aperture is 300mm; Hole depth is 1500mm～2000mm; Hole centre distance is 1500mm～2000mm;
(2) adopt quicklime to fill, the quicklime particle diameter is unsuitable excessive, and maximum particle diameter is not more than 60mm; With soil or sand stuff up a crack, fill closely knit when filling with assurance; While filling tamping; Downward 300mm～500mm fills closely knit with clay from the aperture;
(3) after the said quicklime of step (2) is meant that limestone is through the calcining kiln discharge, without the block lime of slaking.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102221289A CN102359101A (en) | 2011-07-28 | 2011-07-28 | Foundation treatment method for collapsible soil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102221289A CN102359101A (en) | 2011-07-28 | 2011-07-28 | Foundation treatment method for collapsible soil |
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| CN102359101A true CN102359101A (en) | 2012-02-22 |
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| CN2011102221289A Pending CN102359101A (en) | 2011-07-28 | 2011-07-28 | Foundation treatment method for collapsible soil |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105714766A (en) * | 2016-02-23 | 2016-06-29 | 洛阳市规划建筑设计研究院有限公司 | Construction method for improving bearing capacity of collapsible loess field foundation |
| CN110409417A (en) * | 2018-04-26 | 2019-11-05 | 王彦 | A kind of processing method of collapsible soil or molten sunken property soil base |
| CN110409414A (en) * | 2018-04-26 | 2019-11-05 | 王彦 | A kind of processing method of collapsible soil or molten sunken property soil base |
| CN110409415A (en) * | 2018-04-26 | 2019-11-05 | 王彦 | A kind of processing method of collapsible soil or molten sunken property soil base |
| CN110409416A (en) * | 2018-04-26 | 2019-11-05 | 王彦 | A kind of processing method of collapsible soil or molten sunken property soil base |
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| CN1064721A (en) * | 1992-03-06 | 1992-09-23 | 江苏省建筑设计院 | The combined composite foundation facture of ground |
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| CN1362557A (en) * | 2000-12-28 | 2002-08-07 | 西胁醇 | Pile construction method |
| CN1740457A (en) * | 2005-09-15 | 2006-03-01 | 贵阳铝镁设计研究院 | Vibration process of eliminating wet foundation falling for CFG pile |
| CN1932168A (en) * | 2006-08-14 | 2007-03-21 | 毛心焰 | Strong rammer treatment high-water content foundation soil auxiliary construction process |
| CN101660307A (en) * | 2009-08-06 | 2010-03-03 | 新兴河北工程技术有限公司 | Treatment method of collapsible loess foundation |
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2011
- 2011-07-28 CN CN2011102221289A patent/CN102359101A/en active Pending
Patent Citations (6)
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| CN1064721A (en) * | 1992-03-06 | 1992-09-23 | 江苏省建筑设计院 | The combined composite foundation facture of ground |
| US20020098042A1 (en) * | 1996-12-02 | 2002-07-25 | Carlo Canteri | Method for increasing the bearing capacity of foundation soils for built structures |
| CN1362557A (en) * | 2000-12-28 | 2002-08-07 | 西胁醇 | Pile construction method |
| CN1740457A (en) * | 2005-09-15 | 2006-03-01 | 贵阳铝镁设计研究院 | Vibration process of eliminating wet foundation falling for CFG pile |
| CN1932168A (en) * | 2006-08-14 | 2007-03-21 | 毛心焰 | Strong rammer treatment high-water content foundation soil auxiliary construction process |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105714766A (en) * | 2016-02-23 | 2016-06-29 | 洛阳市规划建筑设计研究院有限公司 | Construction method for improving bearing capacity of collapsible loess field foundation |
| CN110409417A (en) * | 2018-04-26 | 2019-11-05 | 王彦 | A kind of processing method of collapsible soil or molten sunken property soil base |
| CN110409414A (en) * | 2018-04-26 | 2019-11-05 | 王彦 | A kind of processing method of collapsible soil or molten sunken property soil base |
| CN110409415A (en) * | 2018-04-26 | 2019-11-05 | 王彦 | A kind of processing method of collapsible soil or molten sunken property soil base |
| CN110409416A (en) * | 2018-04-26 | 2019-11-05 | 王彦 | A kind of processing method of collapsible soil or molten sunken property soil base |
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