CN103243748B - Application of foamed light soil in repairing of building foundation subsidence holes - Google Patents
Application of foamed light soil in repairing of building foundation subsidence holes Download PDFInfo
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- CN103243748B CN103243748B CN201310178529.8A CN201310178529A CN103243748B CN 103243748 B CN103243748 B CN 103243748B CN 201310178529 A CN201310178529 A CN 201310178529A CN 103243748 B CN103243748 B CN 103243748B
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- 239000002689 soil Substances 0.000 title claims abstract description 65
- 238000010276 construction Methods 0.000 claims abstract description 9
- 239000006260 foam Substances 0.000 claims description 48
- 238000000034 method Methods 0.000 claims description 18
- 230000008569 process Effects 0.000 claims description 17
- 238000004078 waterproofing Methods 0.000 claims description 6
- 240000007594 Oryza sativa Species 0.000 claims description 2
- 235000007164 Oryza sativa Nutrition 0.000 claims description 2
- 235000009566 rice Nutrition 0.000 claims description 2
- 230000008901 benefit Effects 0.000 abstract description 2
- 230000008439 repair process Effects 0.000 description 8
- 238000004062 sedimentation Methods 0.000 description 4
- 239000004568 cement Substances 0.000 description 3
- 239000002002 slurry Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000011381 foam concrete Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000005266 casting Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
Abstract
The invention discloses an application of foamed light soil in repairing of building foundation subsidence holes. The application of the foamed light soil in repairing of building foundation subsidence holes includes the following steps: (1) density and strength of the foamed light soil to be used are determined according to height of a building above the subsidence holes; (2) waterproof geomembranes are paved on the bottom layers of the subsidence holes; (3) the foamed light soil with required density and strength is prepared at a construction site and poured in the building foundation subsidence holes, layered pouring is performed during pouring; and (4) the foamed light soil is used for filling the holes in a pouring mode, common surface soil is paved above the foamed light soil, and namely repairing operation is finished. The foamed light soil is used for repairing the building foundation subsidence holes, has the advantages of being high in fluidity and firmness rate, resistant to subsidence and the like, can fill the holes, and simultaneously is small in proportion. The problem of re-subsidence cannot occur after the holes are filled by the foamed light soil, and the foamed light soil is low in cost and suitable for popularization and application.
Description
Technical field
The invention belongs to building engineering field, be specifically related to Foam lightweight soil and repairing the application in structure foundation depression cavity.
Background technology
Structure foundation depression due to soft foundation processing defective and cause, be because drive piles, banket, the measure such as compacting not (not) thoroughly can solve the problem of subgrade depression, thus cause the subsidence of foundations to occur the phenomenon in depression cavity.
For the depression cavity that structure foundation depression occurs, prior art is difficult to process, does not also process case reliably.According to conventional cement slurries filling, the setting percentage (owing to solidifying depression) of 58-65% can not ensure to be full of cavity completely on the one hand, in addition because obturation (conventional cement slurries) proportion is high, also again there is the problem of depression after cannot solving process, filling cost is also high simultaneously, and therefore this building just may be scrapped.
Summary of the invention
In order to overcome shortcoming existing for existing employing conventional cement slurries filling structure foundation depression cavity with not enough, Foam lightweight soil is the object of the present invention is to provide to repair the application in structure foundation depression cavity.Foam lightweight soil has the characteristics such as high fluidity, high setting percentage and anti-settling, can solve the deficiencies in the prior art preferably.
Object of the present invention is achieved through the following technical solutions:
Foam lightweight soil is repairing the application in structure foundation depression cavity, comprises the following steps:
(1) density and the intensity of the Foam lightweight soil that will use is determined according to the height of building above depression cavity; When above depression cavity, the height of building is lower than 20 meters, the density of Foam lightweight soil should be 550 kilograms/m
3, intensity is 0.6MPa; When above depression cavity, the height of building is 20-50 rice, the density of Foam lightweight soil should be 560-640 kilogram/m
3, intensity is 0.7-0.9MPa; When above depression cavity, the height of building is greater than 50 meters, the density of Foam lightweight soil should be 650 kilograms/m
3, intensity is 1.0MPa;
Construction of buildings on subgrade, process of generally will driving piles; The Main Load of building is born by pile foundation, and basement process Main Function is the deformation failure of anchor spike base horizontal direction, plays stabilization, and be exactly the attractive in appearance of guarantee ground in addition, walking is convenient.The subsidence of foundations can affect the supporting capacity of pile foundation, destroys ground attractive in appearance, and personnel pass in and out safety without guarantee, inconvenience.Light soil ground only need ensure that the intensity of original place base just can meet the requirement of intensity, in order to reliably, leaves certain allowance, fully ensures safety, so, according to height, suitably improve intensity;
(2) when starting to process, the soft mud in depression cavity is dug up make cavity reach at least 2 meters dark, then spread waterproofing geomembrane at the bottom in depression cavity; Foam lightweight soil is for a long time under the immersion of water, and its performance can be destroyed, and laying waterproofing geomembrane is exactly to prevent water logging, molding casting body.
(3) prepare the Foam lightweight soil of desired density and intensity at the construction field (site), and be poured in structure foundation depression cavity; Laminated pouring is wanted, every layer thickness 40-80cm during cast; Later layer be cast in after front one deck pours into a mould 20 hours, carry out when front one deck Foam lightweight soil initial setting strength is greater than more than 0.2Mpa;
If every layer thickness is lower than 40cm, the solidification effect after filling is poor, and intensity is difficult to ensure card, and construction times is many, increases cost.If higher than 80cm, easily occur segregation layering, the defects such as froth breaking after cast, the uniformity of pour mass performance can not get ensureing.
(4) by Foam lightweight soil cavity watered and fill, when its initial setting strength reaches more than 0.3Mpa, above Foam lightweight soil, spread normal surface soil again, namely complete reparation operation;
Described Foam lightweight soil can adopt the Foam lightweight soil of prior art, foam concrete disclosed in such as " People's Republic of China (PRC) construction industry industry standard-foam concrete JG/T266-2011 ".
The present invention has following advantage and effect relative to prior art:
Foam lightweight soil be applied to and repair structure foundation depression cavity, Foam lightweight soil has the characteristics such as high fluidity, high setting percentage and anti-settling, can fill full cavity; Foam lightweight soil proportion is little simultaneously, and the problem of sedimentation again can not occur after using Foam lightweight soil to fill; Moreover Foam lightweight soil cost is low, be applicable to promoting the use of.
Accompanying drawing explanation
Fig. 1 is building settlement cavity organigram before treatment.
Fig. 2 is the organigram in building settlement cavity after employing method process of the present invention.
Detailed description of the invention
Below in conjunction with embodiment and accompanying drawing, the present invention is described in further detail, but embodiments of the present invention are not limited thereto.
Embodiment 1
Structure foundation depression cavity, one place, as shown in Figure 1, top, cavity building object height 30 meters, to dark about 2 meters of depression cavity during process for its structure.Adopt Foam lightweight soil to repair this structure foundation depression cavity, comprise the following steps:
(1) determine that the density of the Foam lightweight soil that will use is 580 kilograms/m according to the height of building above depression cavity
3, intensity is 0.8MPa;
(2), when starting to process, the soft mud in depression cavity is dug up, then the bottom in depression cavity spread waterproofing geomembrane (purchased from Dezhou Orient Geosynthetics Co., Ltd., specification 0.5-1.0mm; Lower same);
(3) prepare the Foam lightweight soil of desired density and intensity at the construction field (site), and be poured in structure foundation depression cavity; Laminated pouring is wanted, every layer thickness 60cm during cast; Later layer be cast in after front one deck pours into a mould 20 hours, carry out when front one deck Foam lightweight soil initial setting strength is greater than more than 0.2Mpa;
(4) by Foam lightweight soil cavity watered and fill, when its initial setting strength reaches more than 0.3Mpa, above Foam lightweight soil, spread normal surface soil again, namely complete reparation operation; Repair the structure of groundwork as shown in Figure 2.
After adopting above-mentioned process, no longer there is sedimentation in this place's ground, ground is attractive in appearance, and walking is convenient.
Embodiment 2
Structure foundation depression cavity, one place, as shown in Figure 1, top, cavity building object height 60 meters, to dark about 3 meters of depression cavity during process for its structure.Adopt Foam lightweight soil to repair this structure foundation depression cavity, comprise the following steps:
(1) determine that the density of the Foam lightweight soil that will use is 650 kilograms/m according to the height of building above depression cavity
3, intensity is 1.0MPa;
(2), when starting to process, the soft mud in depression cavity is dug up, then spreads waterproofing geomembrane at the bottom in depression cavity;
(3) prepare the Foam lightweight soil of desired density and intensity at the construction field (site), and be poured in structure foundation depression cavity; Laminated pouring is wanted, every layer thickness 80cm during cast; Later layer be cast in after front one deck pours into a mould 20 hours, carry out when front one deck Foam lightweight soil initial setting strength is greater than more than 0.2Mpa;
(4) by Foam lightweight soil cavity watered and fill, when its initial setting strength reaches more than 0.3Mpa, above Foam lightweight soil, spread normal surface soil again, namely complete reparation operation; Repair the structure of groundwork as shown in Figure 2.
After adopting above-mentioned process, no longer there is sedimentation in this place's ground, ground is attractive in appearance, and walking is convenient.
Embodiment 3
Structure foundation depression cavity, one place, as shown in Figure 1, top, cavity building object height 15 meters, to dark about 1.5 meters of depression cavity during process for its structure.Adopt Foam lightweight soil to repair this structure foundation depression cavity, comprise the following steps:
(1) determine that the density of the Foam lightweight soil that will use is 550 kilograms/m according to the height of building above depression cavity
3, intensity is 0.6MPa;
(2) when starting to process, the soft mud in depression cavity is dug up make cavity reach 2 meters dark, then spread waterproofing geomembrane at the bottom in depression cavity;
(3) prepare the Foam lightweight soil of desired density and intensity at the construction field (site), and be poured in structure foundation depression cavity; Laminated pouring is wanted, every layer thickness 50cm during cast; Later layer be cast in after front one deck pours into a mould 20 hours, carry out when front one deck Foam lightweight soil initial setting strength is greater than more than 0.2Mpa;
(4) by Foam lightweight soil cavity watered and fill, when its initial setting strength reaches more than 0.3Mpa, above Foam lightweight soil, spread normal surface soil again, namely complete reparation operation; Repair the structure of groundwork as shown in Figure 2.
After adopting above-mentioned process, no longer there is sedimentation in this place's ground, ground is attractive in appearance, and walking is convenient.
Above-described embodiment is the present invention's preferably embodiment; but embodiments of the present invention are not restricted to the described embodiments; change, the modification done under other any does not deviate from Spirit Essence of the present invention and principle, substitute, combine, simplify; all should be the substitute mode of equivalence, be included within protection scope of the present invention.
Claims (1)
1. Foam lightweight soil is repairing the application in structure foundation depression cavity, it is characterized in that comprising the following steps:
(1) density and the intensity of the Foam lightweight soil that will use is determined according to the height of building above depression cavity; When above depression cavity, the height of building is lower than 20 meters, the density of Foam lightweight soil should be 550 kilograms/m
3, intensity is 0.6MPa; When above depression cavity, the height of building is 20-50 rice, the density of Foam lightweight soil should be 560-640 kilogram/m
3, intensity is 0.7-0.9MPa; When above depression cavity, the height of building is greater than 50 meters, the density of Foam lightweight soil should be 650 kilograms/m
3, intensity is 1.0MPa;
(2) when starting to process, the soft mud in depression cavity is dug up make cavity reach at least 2 meters dark, then spread waterproofing geomembrane at the bottom in depression cavity;
(3) prepare the Foam lightweight soil of desired density and intensity at the construction field (site), and be poured in structure foundation depression cavity; Laminated pouring is wanted, every layer thickness 40-80cm during cast; Later layer be cast in after front one deck pours into a mould 20 hours, carry out when front one deck Foam lightweight soil initial setting strength is greater than 0.2Mpa;
(4) by Foam lightweight soil cavity watered and fill, when its initial setting strength reaches more than 0.3Mpa, above Foam lightweight soil, spread normal surface soil again, namely complete reparation operation.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310178529.8A CN103243748B (en) | 2013-05-14 | 2013-05-14 | Application of foamed light soil in repairing of building foundation subsidence holes |
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| CN201310178529.8A CN103243748B (en) | 2013-05-14 | 2013-05-14 | Application of foamed light soil in repairing of building foundation subsidence holes |
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| CN103243748A CN103243748A (en) | 2013-08-14 |
| CN103243748B true CN103243748B (en) | 2015-03-11 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20040100704A (en) * | 2003-05-23 | 2004-12-02 | 한국해양연구원 | A Light-Weighted Foam Soil Manufacturing Method and Soft Ground Improvement Method Using thereof |
| CN101391902A (en) * | 2008-11-10 | 2009-03-25 | 梁林华 | Foaming concrete made by waste and old concrete and production method thereof and use |
| JP2010180678A (en) * | 2009-02-09 | 2010-08-19 | Bridgestone Corp | Load reducing configuration for structure |
| CN102261262A (en) * | 2010-08-13 | 2011-11-30 | 深圳市中金岭南有色金属股份有限公司凡口铅锌矿 | High-performance foam mortar filling method for mine stope |
| WO2013065229A1 (en) * | 2011-11-04 | 2013-05-10 | Ｊｆｅスチール株式会社 | Filling material and ground-repairing method |
-
2013
- 2013-05-14 CN CN201310178529.8A patent/CN103243748B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20040100704A (en) * | 2003-05-23 | 2004-12-02 | 한국해양연구원 | A Light-Weighted Foam Soil Manufacturing Method and Soft Ground Improvement Method Using thereof |
| CN101391902A (en) * | 2008-11-10 | 2009-03-25 | 梁林华 | Foaming concrete made by waste and old concrete and production method thereof and use |
| JP2010180678A (en) * | 2009-02-09 | 2010-08-19 | Bridgestone Corp | Load reducing configuration for structure |
| CN102261262A (en) * | 2010-08-13 | 2011-11-30 | 深圳市中金岭南有色金属股份有限公司凡口铅锌矿 | High-performance foam mortar filling method for mine stope |
| WO2013065229A1 (en) * | 2011-11-04 | 2013-05-10 | Ｊｆｅスチール株式会社 | Filling material and ground-repairing method |
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Address after: Tsinghua Science Park 511440 Guangdong city of Guangzhou province Panyu District Shilou town Guanqiao Village building five floor D District Patentee after: GUANGDONG SHENGRUI TECHNOLOGY Co.,Ltd. Address before: Tsinghua Science Park 511440 Guangdong city of Guangzhou province Panyu District Shilou town Guanqiao Village building five floor D District Patentee before: GUANGDONG SHENGRUI CIVIL TECHNOLOGY CO.,LTD. |
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Denomination of invention: Application of foamed light soil in repairing of building foundation subsidence holes Effective date of registration: 20200617 Granted publication date: 20150311 Pledgee: Shunde Guangdong rural commercial bank Limited by Share Ltd. Daliang branch Pledgor: GUANGDONG SHENGRUI TECHNOLOGY Co.,Ltd. Registration number: Y2020980003164 |
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Denomination of invention: Application of foam light soil in repairing building foundation subsidence cavity Effective date of registration: 20230825 Granted publication date: 20150311 Pledgee: Guangdong Shunde Rural Commercial Bank Co.,Ltd. science and technology innovation sub branch Pledgor: GUANGDONG SHENGRUI TECHNOLOGY Co.,Ltd. Registration number: Y2023980053840 |