CN103510533A - Rigidity-variable round raft foundation of steel storage tank - Google Patents
Rigidity-variable round raft foundation of steel storage tank Download PDFInfo
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- CN103510533A CN103510533A CN201210203305.3A CN201210203305A CN103510533A CN 103510533 A CN103510533 A CN 103510533A CN 201210203305 A CN201210203305 A CN 201210203305A CN 103510533 A CN103510533 A CN 103510533A
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Abstract
The invention discloses a rigidity-variable round raft foundation of a steel storage tank. The diameter of the storage tank is D, the thickness within the diameter d range from center of a raft is the same, d is smaller than D, and the thickness of the raft gradually decreases from the circumference of d to the edge of the raft foundation. According to the rigidity-variable round raft foundation of the steel storage tank, the rigidity-variable foundation mode formed by gradually varying thickness from the center to the edge corresponds to the deformation state of the foundation of the storage tank, the stress inside the raft is uniform, the structure is simple, construction is convenient, manufacturing cost is low, and the function of regulating foundation deformation is obvious.
Description
Technical field
The present invention relates to a kind of geotechnical engineering basis, particularly a kind of steel steel tank becomes the circular raft foundation of rigidity.
Background technology
Steel tank is a kind of use special equipment very widely, and the big or small steel tank that China builds every year and transforms is countless.Yet at present,, in Large Steel storage tank process of construction, in the basic engineering of large capacity steel design storage tank, the irregular depression of the tank bottom being caused by foundation deformation and tapering problem, up to the present also do not find rational method to give whole solutions.
A notable feature of base of steel tank sedimentation and deformation, at the bottom of tank, easily there is exactly irregular depression or form dish (being commonly called as pot bottom-shape) distortion, especially for the tank foundation being built on soft foundation, the formation in the bottom of a pan very easily causes storage tank bottom plate and tank skin attachment weld to break, or in storage tank, the impurity in storage medium easily gathers and is deposited in the bottom of a pan and affects long-term normal use.The measure that solves irregular depression and the bottom of a pan problem on deformation often mainly concentrates in the processing of ground, as the filler under tank bottom adopts Yan Guandi center, is paved into certain taper gradient, alleviates the deformation extent of pot bottom-shape.Case histories show in a large number, and adopting filler is done to tapered this way is not the technical measures in mechanical concept, just for reducing the bottom of a pan distortion deformation-compensated (as in advance the raising of foundation of circular beam) default on the impact of tank bottom.At the bottom of tank, filler is concerning tank foundation, in fact there is it as the one side of foundation effect, but because filler often adopts discrete material (clay is few use due to problems concerning land resources), as sandstone, stone nitre etc., horizontal rigidity, bending rigidity and shearing rigidity are almost nil, therefore it is also just very limited that, it regulates the effect of foundation deformation.
Therefore those skilled in the art is devoted to study a kind of new raft foundation, can from mechanics angle, solve the problem on deformation of storage tank raft foundation, makes raft foundation stressed evenly simultaneously.
Summary of the invention
The technical problem to be solved in the present invention is the deficiency causing in order to overcome raft foundation foundation settlement distortion in prior art, provide a kind of mechanical concept clear and definite, can effectively regulate foundation deformation, keep raft foundation stressed evenly, the steel tank that meets storage tank ground dish deformation behaviour becomes the circular raft foundation of rigidity, in order to overcome the deficiency of packing layer foundation level rigidity at the bottom of tank, bending rigidity and shearing rigidity.
The present invention solves above-mentioned technical problem by following technical proposals:
A raft foundation, tank diameter is D, and its feature is, within the scope of raft plate central diameter d, is equal thickness, and d is less than D, and plank thickness diminishes to raft foundation edge thickness gradually from d circumference.
Preferably, d is 0.2 ~ 0.4D.
Preferably, described raft foundation is reinforced concrete structure.
Preferably, described raft foundation is circular.
Positive progressive effect of the present invention is: storage tank raft foundation of the present invention, and basic stress is even, simple in structure, and easy construction is cheap, and the effect of exchanging joint foundation deformation is remarkable.
Accompanying drawing explanation
Fig. 1 is the raft foundation structural front view on ground that is based upon under one embodiment of the invention, and wherein storage tank is based upon on raft foundation.
Fig. 2 is the top view of the raft foundation structure shown in Fig. 1.
The specific embodiment
Embodiments of the invention describe with reference to the accompanying drawings.In Figure of description, element or the device with similar structures or function will represent with identical component symbol.Accompanying drawing is each embodiment of the present invention for convenience of explanation just, is not to carry out to the present invention the explanation of exhaustive, neither limit scope of the present invention.
Fig. 1 and Fig. 2 have disclosed the structural representation of raft foundation under one embodiment of the invention.In this embodiment, ground 1, for meeting the tank foundation ground of normal instructions for use, is equipped with raft foundation 2 on it, and tank foundation adopts reinforced concrete circular raft board-like, and steel tank 3 is based upon on raft foundation 2.Raft foundation 2 comprises equal thickness part 21 and Varying-thickness part 22 two parts.The thickness up and down of equal thickness part 21 is identical, guarantees that reinforcing bar is can intersection, Bu center overlapping, and equal thickness part 21 rounded ，Qi center of circle under depression angle roughly overlaps with the center of circle of raft foundation, and diameter is d.The thickness of Varying-thickness part 22 is from equal thickness part 21 to the attenuation gradually of raft foundation edge.Steel tank 3 diameters are D, are based upon on raft foundation 2.
In a preferred embodiment, the diameter d of equal thickness part 21 is about 0.2 to 0.4 times of steel tank diameter D, that is, and and d=0.2 ~ 0.4D.In this structure, the core structural strength of raft foundation 2 is enhanced, Varying-thickness part 22 surfaces are no longer level, like this, and in tank during storage medium, foundation stiffness improves, thereby the deficiency that overcomes packing layer foundation level rigidity at the bottom of tank, bending rigidity and shearing rigidity, further regulates foundation deformation, simultaneously effectively, in raft plate stressed evenly, meet the Storage Tank Foundation Design scheme of storage tank foundation deformation feature.The reinforced concrete circular raft slab foundation adopting, because adopt, radially become rigidity Design, rigidity characteristic meets storage tank foundation deformation rule, thereby can effectively improve tank foundation foundation stiffness, simultaneously, raft foundation adopts the steel concrete scheme of continuous placing, not only has the horizontal rigidity higher than discrete material, bending rigidity and shearing rigidity, to the ground under plate, also can play adjusting metamorphosis.
Although described above the specific embodiment of the present invention, it will be understood by those of skill in the art that these only illustrate, protection scope of the present invention is limited by appended claims.Those skilled in the art is not deviating under the prerequisite of principle of the present invention and essence, can make various changes or modifications to these embodiments, but these changes and modification all fall into protection scope of the present invention.
Claims (4)
1. steel tank becomes the circular raft foundation of rigidity, and described tank diameter is D, it is characterized in that, within the scope of described raft plate central diameter d, is equal thickness, and d is less than D, and plank thickness diminishes to raft foundation edge thickness gradually from d circumference.
2. steel tank as claimed in claim 1 becomes the circular raft foundation of rigidity, it is characterized in that, d is 0.2D ~ 0.4D.
3. steel tank as claimed in claim 1 becomes the circular raft foundation of rigidity, it is characterized in that, described raft foundation is reinforced concrete structure.
4. the steel tank as described in claim 1,2 or 3 becomes the circular raft foundation of rigidity, it is characterized in that, described raft foundation is circular.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210203305.3A CN103510533B (en) | 2012-06-15 | 2012-06-15 | Rigidity-variable round raft foundation of steel storage tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210203305.3A CN103510533B (en) | 2012-06-15 | 2012-06-15 | Rigidity-variable round raft foundation of steel storage tank |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103510533A true CN103510533A (en) | 2014-01-15 |
| CN103510533B CN103510533B (en) | 2015-09-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210203305.3A Active CN103510533B (en) | 2012-06-15 | 2012-06-15 | Rigidity-variable round raft foundation of steel storage tank |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109356188A (en) * | 2018-11-15 | 2019-02-19 | 中海石油气电集团有限责任公司 | A kind of hardened structure of double rafts and preparation method thereof on LNG storage tank basis |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54124504A (en) * | 1978-03-22 | 1979-09-27 | Mitsubishi Oil Co | Method of construction of tank foundation |
| CN2813711Y (en) * | 2005-07-29 | 2006-09-06 | 宝山钢铁股份有限公司 | Basic structure capable of preventing gas cabinet foundation soil from settling |
| CN2830511Y (en) * | 2005-11-16 | 2006-10-25 | 南京工业大学 | Pot bottom shape raft board |
| CN101392536A (en) * | 2008-10-15 | 2009-03-25 | 朱奎 | Composite foundation of composite pile with different stiffness |
| RU2393299C1 (en) * | 2009-02-25 | 2010-06-27 | Александр Федорович Луцык | Cylindrical storage tank for oil products |
| CN102296508A (en) * | 2011-06-20 | 2011-12-28 | 江苏省交通科学研究院股份有限公司 | Variable-stiffness composite foundation for highway |
-
2012
- 2012-06-15 CN CN201210203305.3A patent/CN103510533B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54124504A (en) * | 1978-03-22 | 1979-09-27 | Mitsubishi Oil Co | Method of construction of tank foundation |
| CN2813711Y (en) * | 2005-07-29 | 2006-09-06 | 宝山钢铁股份有限公司 | Basic structure capable of preventing gas cabinet foundation soil from settling |
| CN2830511Y (en) * | 2005-11-16 | 2006-10-25 | 南京工业大学 | Pot bottom shape raft board |
| CN101392536A (en) * | 2008-10-15 | 2009-03-25 | 朱奎 | Composite foundation of composite pile with different stiffness |
| RU2393299C1 (en) * | 2009-02-25 | 2010-06-27 | Александр Федорович Луцык | Cylindrical storage tank for oil products |
| CN102296508A (en) * | 2011-06-20 | 2011-12-28 | 江苏省交通科学研究院股份有限公司 | Variable-stiffness composite foundation for highway |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109356188A (en) * | 2018-11-15 | 2019-02-19 | 中海石油气电集团有限责任公司 | A kind of hardened structure of double rafts and preparation method thereof on LNG storage tank basis |
| CN109356188B (en) * | 2018-11-15 | 2024-04-30 | 中海石油气电集团有限责任公司 | Double raft structure of LNG storage tank foundation and manufacturing method thereof |
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| CN103510533B (en) | 2015-09-02 |
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