CN102926415B - Correction method for storage tank foundation - Google Patents
Correction method for storage tank foundation Download PDFInfo
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- CN102926415B CN102926415B CN201210488623.9A CN201210488623A CN102926415B CN 102926415 B CN102926415 B CN 102926415B CN 201210488623 A CN201210488623 A CN 201210488623A CN 102926415 B CN102926415 B CN 102926415B
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Abstract
The invention discloses a correction method for a storage tank foundation, comprising the steps of (1) arranging a sand cushion on a foundation soil at first; (2) arranging a plurality of annular shaping sand bag layers on the sand cushion, wherein the shaping sand bag layer is formed by sequentially arraying a plurality of sand bags which are filled with sand, a gap between the adjacent sand bags is filled with sand, and the openings of the sand bags stretch out of the outer ring of the sand cushion; (3) continuing to pave the sand cushion; (4) placing the to-be-corrected annular storage tank foundation on the sand cushion and above the shaping sand bag layers; (5) forming an annular sand-excavating ditch at a position corresponding to the opening of each sand bag, on the sand cushion, and enabling the opening of the sand bag to be exposed in the sand-excavating ditch; and (6) in the case that the storage tank foundation is inclined, calculating a sand-taking amount for correction adjustment according to the inclining degree, determining the amount of sand taken out from the plurality of sand bags in the shaping sand bag layers according to the sand-taking amount and a sand-taking position, and controlling the deformation of the storage tank foundation in the allowable range of specifications. Via the method, the storage tank foundation can be rapidly and accurately corrected; and moreover, the construction is simple and the needed expense is low.
Description
Technical field
The present invention relates to a kind of tank foundation method for correcting error.
Background technology
The precompressed of storage tank water-filling is just to start application, traditional foundation treatment technology the sixties in last century.It is simple that this foundation treatment technology has construction, effective, the advantage of reduced investment, but this method is owing to being to utilize at storage tank internal classification water-filling as load, the loading precompressed of enforcement to foundation soil, make progressively densification of foundation soil, the soil body is progressively fixed, reach the object that tank foundation distortion and bearing capacity of foundation soil meet the demands, if because loading velocity is controlled bad, inhomogeneous or the periphery of foundation soil excavation, the impact of the factors such as precipitation, will make tank foundation tilt (comprising that basic plane tilts and non-planar inclination), therefore generally adopt water-filling preloading method Ground Treatment, all want the corresponding tank foundation correction of supporting preparation scheme, so that when there is basic slope, tank foundation is rectified a deviation, up to the present the basic skills of correction has: straightening method is adjusted in precompressed straightening method, draining straightening method, ditching straightening method, jacking, there is separately defect in these several method for correcting error, mainly contain: correction processing procedure is long, expense is higher and accurate leveling tank foundation etc., and these defects have greatly affected applying of water-filling prepressing ground foundation treatment method.
Summary of the invention
In order to overcome above-mentioned defect, the invention provides a kind of tank foundation method for correcting error, can fast accurate tank foundation is rectified a deviation, and simple, the required expense of constructing is lower.
The present invention for the technical scheme that solves its technical problem and adopt is: a kind of tank foundation method for correcting error, comprises the following steps:
1. the sand cushion of one circle is first set on a foundation soil, and this sand cushion at least can make annular tank foundation to be rectified a deviation completely placed on it;
2. the sizing sand pocket layer of some annulars is set on described sand cushion, and this sizing sand pocket layer is arranged in order and is formed by some sand pockets of filling sand, and fill with sand in the space between adjacent sand pocket, and the opening of each sand pocket all stretches out described sand cushion outer ring;
3. above described sand cushion and some sizing sand pocket layers corresponding with this sand cushion, continue again to lay sand cushion;
4. annular tank foundation to be rectified a deviation is placed on described sand cushion, and makes this tank foundation be positioned at the top of described sizing sand pocket layer;
5. at the sand pocket aperture position place of the corresponding described sizing sand pocket layer of described sand cushion, establish the sand furrow of drawing of an annular, this degree of depth of drawing sand furrow at least arrives described sizing sand pocket layer and makes the opening of described sand pocket be exposed to this to draw in sand furrow;
6. when tank foundation occurs tilting, according to tilt quantity, calculate correction and regulate the sand amount of getting, according to getting sand amount and getting sand location positioning and take out the sand in the some sand pockets in described sizing sand pocket layer, make tank foundation Deformation control in the scope of standard license, the sand pocket that takes out sand forms sky sand pocket.
As a further improvement on the present invention, at described sand pocket layer and described tank foundation periphery, be respectively equipped with back-pressure layer, described in draw sand furrow and be located at outside this back-pressure layer.
As a further improvement on the present invention, according to the deflection of tank foundation, can repeat described step 6., until tank foundation base stabilization.
As a further improvement on the present invention, 2. also pre-buried in the sizing sand pocket layer arranging in described step be free sand pocket, in sand pocket in the sizing sand pocket layer that 2. the empty sand pocket that this is pre-buried and described step arrange, be inserted with in advance Grouting Pipe, this Grouting Pipe mouth of pipe stretches out described sand pocket mouth, and the mouth of pipe removable seal of this Grouting Pipe; When described tank foundation occurs that distortion is abnormal, while needing jacking tank foundation, can carry out jacking tank foundation to injected water mud in the Grouting Pipe of empty sand pocket.
As a further improvement on the present invention, the degree of depth that described Grouting Pipe is inserted described sand pocket is not less than 1m, when described tank foundation occurs that distortion is abnormal, while needing jacking tank foundation, the method by compaction grouting is injected into cement paste in sky sand pocket with suitable pressure with grouting pump.
As a further improvement on the present invention, each sand pocket in described sizing sand pocket layer is equipped with numbering.
As a further improvement on the present invention, described step 5. after, in the described bottom part ring of drawing sand furrow, around this, draw sand furrow one collecting gutter be set again.
As a further improvement on the present invention, described step 3. in, the sand cushion thickness that continues again to lay above described sand cushion and some sizing sand pocket layers corresponding with this sand cushion is not less than 100mm.
As a further improvement on the present invention, described step 4. in, described tank foundation be positioned at described sizing sand pocket layer directly over.
As a further improvement on the present invention, described step 6. in, adopt the water of certain pressure that the sand in sand pocket is gone out.
The invention has the beneficial effects as follows: by the design of sizing sand pocket layer, in the position available water of need to rectifying a deviation, go out the sand in corresponding sand pocket, convenient, fast, the accurate tank foundation that force-lands; As injected water mud in the sizing sand pocket empty, also can jacking regulate tank foundation.Like this, past processing procedure is long, expense is higher and the accurate method for correcting error of leveling tank foundation, become little, the fast and accurate method of cost, solved the problem that the precompressed of storage tank water-filling can not be applied on inhomogeneous ground, the range of application of greatly having expanded the precompressed of storage tank water-filling, has significantly reduced the disposal cost of storage tank ground and energy consumption.
Accompanying drawing explanation
Fig. 1 is embodiment of the present invention tank foundation plan structure schematic diagram;
Fig. 2 is that Fig. 1 is along A-A cross-sectional view.
By reference to the accompanying drawings, make the following instructions:
1---tank foundation 2---foundation soil
3---sand cushion 4---back-pressure layer
5---sizing sand pocket layers 6---are drawn sand furrow
7---collecting gutter
The specific embodiment
By reference to the accompanying drawings, the present invention is elaborated, but protection scope of the present invention is not limited to following embodiment, the simple equivalence of in every case being done with the present patent application the scope of the claims and description changes and modifies, within all still belonging to patent covering scope of the present invention.
As shown in Figure 1, 2, a kind of tank foundation method for correcting error, comprises the following steps:
1. the sand cushion 3 of one circle is first set on a foundation soil 2, and this sand cushion at least can make annular tank foundation 1 to be rectified a deviation completely placed on it;
2. the sizing sand pocket layer 5 of some annulars is set on described sand cushion, and this sizing sand pocket layer is arranged in order and is formed by some sand pockets of filling sand, and fill with sand in the space between adjacent sand pocket, and the opening of each sand pocket all stretches out described sand cushion outer ring;
3. above described sand cushion and some sizing sand pocket layers corresponding with this sand cushion, continue again to lay sand cushion;
4. annular tank foundation to be rectified a deviation is placed on described sand cushion, and makes this tank foundation be positioned at the top of described sizing sand pocket layer;
That 5. at the sand pocket aperture position place of the corresponding described sizing sand pocket layer of described sand cushion, establishes an annular draws sand furrow 6, and this degree of depth of drawing sand furrow at least arrives described sizing sand pocket layer and makes the opening of described sand pocket be exposed to this to draw in sand furrow;
6. when tank foundation occurs tilting, according to tilt quantity, calculate correction and regulate the sand amount of getting, according to getting sand amount and getting sand location positioning and take out the sand in the some sand pockets in described sizing sand pocket layer, make tank foundation Deformation control in the scope of standard license, the sand pocket that takes out sand forms sky sand pocket.
Preferably, at described sand pocket layer and described tank foundation periphery, be respectively equipped with back-pressure layer 4, described in draw sand furrow and be located at outside this back-pressure layer.
After tank foundation construction, what should reserve certain width at periphery draws sand furrow 6, should dig out the collecting gutter 7 of being convenient to draw sand operation and draining before drawing the inherent correction of sand furrow, and each sand pocket mouth should be exposed at back-pressure layer 4 outer (being convenient to draw sand operation).During the precompressed of storage tank installation water-filling, when tank foundation 1 inclination (plane tilts or non-planar inclination) appears in settlement observation, just can calculate the required sand amount of getting of correction according to tilt quantity, press sand amount and get sand position and determine that taking out those numbers the sand in sand pocket in sizing sand pocket layers, then untie the mouth of these sand pockets, in certain sequence (with the principle of as far as possible evenly adjusting, adopt interval mode) with the water of certain pressure, the sand in sand pocket is gone out, the forced landing of tank foundation higher position is extremely flat with basic lower, accurate leveling tank foundation; As the sand forced landing of drawing in a stage makes after basic leveling, storage tank ground is still unstable, and tank foundation 1 still continues distortion, can repeat two stages or a plurality of stage, until storage tank base stabilization makes tank foundation 1 Deformation control in the scope of standard license, meet design and operational requirement.
As tank foundation occurs that distortion is abnormal, while needing jacking basis, can be in drawing out the empty sand pocket of sand or the sky of imbedding in sand cushion in advance sizing sand pocket interpolation enter Grouting Pipe (insertion depth is not less than 1m), after sand pocket mouth and Grouting Pipe colligation are fixing, at sand pocket mouth periphery, with braid, sand pocket mouth plug is blocked up to tight (during slip casting, not making cement paste burst sand pocket), method with compaction grouting, cement paste is injected to sand pocket with grouting pump with certain pressure (general 0.1mPa), make it have certain volume, play the effect on jacking basis, sand pocket is filled with after cement paste, Grouting Pipe is fastened to (avoiding spillage pressure release), wait the cement solidifies (preferably using fast gravity die filler).
Claims (10)
1. a tank foundation method for correcting error, is characterized in that comprising the following steps:
One sand cushion (3) is 1. first set on a foundation soil (2), and this sand cushion at least can make annular tank foundation (1) to be rectified a deviation completely placed on it;
2. the sizing sand pocket layer (5) of some annulars is set on described sand cushion, and this sizing sand pocket layer is arranged in order and is formed by some sand pockets of filling sand, and fill with sand in the space between adjacent sand pocket, and the opening of each sand pocket all stretches out described sand cushion outer ring;
3. above described sand cushion and some sizing sand pocket layers corresponding with this sand cushion, continue again to lay sand cushion;
4. annular tank foundation to be rectified a deviation is placed on described sand cushion, and makes this tank foundation be positioned at the top of described sizing sand pocket layer;
That 5. at the sand pocket aperture position place of the corresponding described sizing sand pocket layer of described sand cushion, establishes an annular draws sand furrow (6), and this degree of depth of drawing sand furrow at least arrives described sizing sand pocket layer and makes the opening of described sand pocket be exposed to this to draw in sand furrow;
6. when tank foundation occurs tilting, according to tilt quantity, calculate correction and regulate the sand amount of getting, according to getting sand amount and getting sand location positioning and take out the sand in the some sand pockets in described sizing sand pocket layer, make tank foundation Deformation control in the scope of standard license, the sand pocket that takes out sand forms sky sand pocket.
2. tank foundation method for correcting error according to claim 1, is characterized in that: at described sand pocket layer and described tank foundation periphery, be respectively equipped with back-pressure layer (4), described in draw sand furrow and be located at outside this back-pressure layer.
3. tank foundation method for correcting error according to claim 1 and 2, is characterized in that: according to the deflection of tank foundation, can repeat described step 6., until tank foundation base stabilization.
4. tank foundation method for correcting error according to claim 1 and 2, it is characterized in that: also pre-buried in the sizing sand pocket layer 2. arranging in described step be free sand pocket, in sand pocket in the sizing sand pocket layer that 2. the empty sand pocket that this is pre-buried and described step arrange, be all inserted with in advance Grouting Pipe, this Grouting Pipe mouth of pipe stretches out described sand pocket mouth, and the mouth of pipe removable seal of this Grouting Pipe; When described tank foundation occurs that distortion is abnormal, while needing jacking tank foundation, can carry out jacking tank foundation to injected water mud in the Grouting Pipe of empty sand pocket.
5. tank foundation method for correcting error according to claim 4, it is characterized in that: the degree of depth that described Grouting Pipe is inserted described sand pocket is not less than 1m, when described tank foundation occurs that distortion is abnormal, while needing jacking tank foundation, the method by compaction grouting is injected into cement paste in sky sand pocket with suitable pressure with grouting pump.
6. tank foundation method for correcting error according to claim 1 and 2, is characterized in that: each sand pocket in described sizing sand pocket layer is equipped with numbering.
7. tank foundation method for correcting error according to claim 1 and 2, is characterized in that: described step 5. after, in the described bottom part ring of drawing sand furrow, around this, draw sand furrow one collecting gutter (7) be set again.
8. tank foundation method for correcting error according to claim 1 and 2, is characterized in that: described step 3. in, the sand cushion thickness that continues again to lay above described sand cushion and some sizing sand pocket layers corresponding with this sand cushion is not less than 100mm.
9. tank foundation method for correcting error according to claim 1 and 2, is characterized in that: described step 4. in, described tank foundation be positioned at described sizing sand pocket layer directly over.
10. tank foundation method for correcting error according to claim 1 and 2, is characterized in that: described step 6. in, adopt the water of certain pressure that the sand in sand pocket is gone out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201210488623.9A CN102926415B (en) | 2012-11-27 | 2012-11-27 | Correction method for storage tank foundation |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210488623.9A CN102926415B (en) | 2012-11-27 | 2012-11-27 | Correction method for storage tank foundation |
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| CN102926415A CN102926415A (en) | 2013-02-13 |
| CN102926415B true CN102926415B (en) | 2014-08-13 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104818736A (en) * | 2015-03-18 | 2015-08-05 | 山东省水利科学研究院 | Precise deviation-rectifying method of large tank ring wall foundation |
| CN105442625B (en) * | 2015-11-04 | 2018-02-09 | 中化（舟山）兴海建设有限公司 | Application of the positioning bar in large-scale storage tank cushion cap ringwall basis |
| CN112323881A (en) * | 2019-08-05 | 2021-02-05 | 张继红 | Building foundation isolation hydraulic control deviation rectifying method |
| CN115434344A (en) * | 2022-10-12 | 2022-12-06 | 中建八局西南建设工程有限公司 | Reinforcing construction device and construction method for collapse or slippage part of foundation pit slope |
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| CN1206062A (en) * | 1998-07-07 | 1999-01-27 | 施广成 | Rectifying method of inclined building on soft soil foundation |
| CN101413277A (en) * | 2008-10-16 | 2009-04-22 | 中国建筑第六工程局有限公司 | Method for correcting incline of deep layer drill silt squeezing and soil discharging |
| CN101864779A (en) * | 2010-06-29 | 2010-10-20 | 天津建岩岩土工程有限公司 | Building deep soil excavating rectification method |
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| JPH08218410A (en) * | 1995-02-17 | 1996-08-27 | Niigata Koji Kk | Repair method of foundation of fluid storage tank |
| JP4111445B2 (en) * | 2003-10-30 | 2008-07-02 | 積水ハウス株式会社 | Basic settlement settlement method using sandbag |
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|---|---|---|---|---|
| CN1206062A (en) * | 1998-07-07 | 1999-01-27 | 施广成 | Rectifying method of inclined building on soft soil foundation |
| CN101413277A (en) * | 2008-10-16 | 2009-04-22 | 中国建筑第六工程局有限公司 | Method for correcting incline of deep layer drill silt squeezing and soil discharging |
| CN101864779A (en) * | 2010-06-29 | 2010-10-20 | 天津建岩岩土工程有限公司 | Building deep soil excavating rectification method |
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