CN208280158U - A kind of steel storage tank basis composite foundation structure - Google Patents
A kind of steel storage tank basis composite foundation structure Download PDFInfo
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- CN208280158U CN208280158U CN201820616589.1U CN201820616589U CN208280158U CN 208280158 U CN208280158 U CN 208280158U CN 201820616589 U CN201820616589 U CN 201820616589U CN 208280158 U CN208280158 U CN 208280158U
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Abstract
The utility model relates to tank foundation fields, more particularly to a kind of steel storage tank basis composite foundation structure, the difference is that: it includes ringwall basis, first foundation pile, second foundation pile, back fill course, medium-sand seam, tar sand insulating layer, ringwall basis upper surface supporting steel storage tank, first foundation pile is set to ringwall ground beneath and circumferentially disposed vertically, second foundation pile is set in ringwall basis and circumferentially disposed vertically, back fill course is set to the second foundation pile upper surface and in ringwall basis, medium-sand seam is set to back fill course upper surface and in ringwall basis, tar sand insulating layer is set to medium-sand seam upper surface and in ringwall basis, tar sand insulating layer upper surface is concordant with ringwall basis upper surface.The utility model meets the needs of steel storage tank is to foundation bearing capacity, has saved cost, shortens the duration.
Description
Technical field
The utility model relates to tank foundation field more particularly to a kind of steel storage tank basis composite foundation structures.
Background technique
Currently, China is increasing to demand for fuel such as gasoline, diesel oil, therefore need in East Coastal, riparian area and refining
Nearby crude oil is laid in newly-built crude oil tank farm on oil base ground, and steel storage tank is that the most widely used storage of current petrochemical industry is former
The container of the fuel such as oil, gasoline, diesel oil；Steel storage tank basis is direct as steel storage tank shell itself and institute's storage media weight
Carrier, most important, the pattern on steel storage tank basis can be divided into: slope protection formula basis, ring wall foundation, outer ring wall foundation and
Pile foundation, wherein most commonly seen in petrochemical industry armored concrete ring wall foundation；By steel storage tank institute storage media weight
Amount is very heavy, and the areal geologies situation such as East Coastal, riparian area, oil refining base is often poor, and many grounds are weak soil
Base, subsoil tend not to meet basic stress requirement, admittedly it needs to carry out basement process to soft soil foundation；
The prior art handles soft soil foundation processing frequently with composite foundation, forms stake and the soil body compoundly
Base is formed whole to common stress；Construction order is general are as follows: first by the soil body in steel storage tank ringwall and steel storage tank ringwall base
The hole soil body is excavated, then carries out compound foundation pile body construction, then carries out the construction on armored concrete ringwall basis, and construction finishes
Afterwards, the backfill of the soil body in steel storage tank ringwall is finally carried out；Since steel storage tank diameter is all bigger, 1000 m3~100000m3
Standard steel tank diameter is in 12m ~ 80m, therefore the soil body amount of excavating, the backfill of the later period soil body, Ramming operation in steel storage tank ringwall
Amount is very big, and the duration is very long, and cost is very big；
In consideration of it, providing a kind of steel storage tank basis composite foundation structure as this field to overcome the above technological deficiency
Urgent problem to be solved.
Summary of the invention
The shortcomings that the purpose of the utility model is to overcome the prior arts provides a kind of steel storage tank basis composite foundation knot
Structure meets the needs of steel storage tank is to foundation bearing capacity, has saved cost, shortens the duration.
In order to solve the above technical problems, a kind of the technical solution of the utility model are as follows: steel storage tank basis composite foundation knot
Structure, the difference is that: it includes ringwall basis, and the ringwall basis is used to support steel storage tank；
First foundation pile, first foundation pile are set to immediately below ringwall basis and circumferentially disposed vertically；
Second foundation pile, second foundation pile are set in ringwall basis and circumferentially disposed vertically；
Back fill course, the back fill course are set to the second foundation pile upper surface and in ringwall bases；
Medium-sand seam, the medium-sand seam are set to back fill course upper surface and in ringwall bases；
Tar sand insulating layer, the tar sand insulating layer is set to medium-sand seam upper surface and in ringwall basis, described
Tar sand insulating layer upper surface is concordant with ringwall basis upper surface.
By above scheme, ringwall basis upper surface is basseted, and steel storage tank bottom outer-edge is located at the ringwall
On basic upper surface.
By above scheme, the ringwall basis is made of armored concrete material.
By above scheme, the stake top absolute altitude of first foundation pile is in ringwall ground beneath 300mm, second foundation pile
Stake top absolute altitude below medium-sand seam 300mm.
By above scheme, the stake spacing of first foundation pile and the second foundation pile is 3.5 times of stake diameters.
By above scheme, first foundation pile and the second foundation pile are cement fly ash gravel pile.
By above scheme, the back fill course is not less than using graded broken stone and graded sand and stone puddled backfill, compacted coefficient
0.96。
By above scheme, sand and coarse sand compaction in layers in the medium-sand seam use, every thickness degree 300mm, compacted coefficient
Not less than 0.96.
By above scheme, sand and No. 30 first building petroleum asphalts are formulated in the tar sand insulating layer use.
By above scheme, the weight proportion of the middle sand and No. 30 first building petroleum asphalts is 93:7.
By above scheme, the ringwall basis in the utility model is armored concrete ringwall basis, and foundation pile is cement
Flyash gravel pile, for stake spacing using 3.5 times of stake diameters and circumferentially disposed, back fill course and medium-sand seam are all made of puddled backfill,
Compacted coefficient is not less than 0.96, tar sand insulating layer use in sand and No. 30 first building petroleum asphalts are formulated and middle sand and 30
The weight proportion of number first building petroleum asphalt is 93:7, and the combination of above-mentioned technical characteristic meets top steel storage tank and holds to ground
Carry the demand of power；Further, the utility model by the stake top absolute altitude of the first foundation pile in ringwall ground beneath, by the second ground
The stake top absolute altitude of stake is lifted to lower section at medium-sand seam bottom, so that the earthwork for reducing original soil body in steel storage tank ringwall basis is opened
Digging amount and the backfill amount in later period, achieve the purpose that saving construction cost, shorten the construction period.
Detailed description of the invention
Fig. 1 is the utility model embodiment schematic view of the front view；
Fig. 2 is the utility model embodiment overlooking structure diagram；
Wherein: 1- steel storage tank, 2- steel storage tank bottom plate, 3- ringwall basis, the first foundation pile of 4-, the second foundation pile of 5-,
6- back fill course, 7- medium-sand seam, 8- tar sand insulating layer, the ground 9-.
Specific embodiment
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, with reference to the accompanying drawing and specifically
Embodiment is described in further detail the utility model.It should be appreciated that specific embodiment described herein is only used to solve
The utility model is released, is not used to limit the utility model.
Hereinafter, many aspects of the utility model will be more fully understood with reference to attached drawing.Component in attached drawing may not
It is drawn to scale.Alternatively, it is preferred that emphasis is clearly demonstrate the component of the utility model.In addition, several views in the accompanying drawings
In figure, identical appended drawing reference indicates corresponding part.
Word " exemplary " as used herein or " illustrative " expression are used as example, example or explanation.It retouches herein
Stating any embodiment for " exemplary " or " illustrative " to be not necessarily to be construed as is preferred relative to other embodiment or has
Benefit.All embodiments described below are illustrative embodiments, and providing these illustrative embodiments is to make
Those skilled in the art are obtained to make and use embodiment of the disclosure and be expected to be not intended to limit the scope of the present disclosure, the disclosure
Range is defined by the claims.In other embodiments, well known feature and method is described in detail so as not to obscure this
Utility model.For purpose described herein, term " on ", "lower", "left", "right", "front", "rear", "vertical", "horizontal" and
Its derivative words is related by the utility model oriented with such as Fig. 1.Moreover, have no intent to by above technical field, background technique,
Any theoretical limitation expressed or implied provided in summary of the invention or detailed description below.It should also be clear that being shown in the accompanying drawings
It is that the utility model limited in the following claims is conceived with specific device described in following discussion book and process
Simple examples embodiment.Therefore, specific size relevant to presently disclosed embodiment and other physical features should not be by
It is construed as limiting, unless claims are separately clearly stated.
Fig. 1 and Fig. 2 are please referred to, the utility model is a kind of basic composite foundation structure of steel storage tank 1, is used for steel storage tank
1 basic foundation processing comprising ringwall basis 3, the first foundation pile 4, the second foundation pile 5, back fill course 6, medium-sand seam 7, drip
Green sand insulating layer 8, the upper surface on the ringwall basis 3 support steel storage tank 1, and the first foundation pile 4 is being set to ringwall basis 3 just vertically
Lower section and circumferentially disposed, the second foundation pile 5 are set in ringwall basis 3 and circumferentially disposed vertically, and back fill course 6 is set to the second ground
5 upper surfaces of stake and in the ringwall basis 3, medium-sand seam 7 is set to 6 upper surface of back fill course and in ringwall basis 3, pitch
Sand insulating layer 8 is set to 7 upper surface of medium-sand seam and in ringwall basis 3,8 upper surface of tar sand insulating layer and ringwall base
3 upper surface of plinth is concordant.
In the utility model embodiment, ringwall basis 3 is made of armored concrete material, and the upper end face bassets 9,
And 1 bottom outer-edge of steel storage tank is located on basic 3 upper surfaces of ringwall；To protect steel storage tank 1, the bottom of steel storage tank 1 is equipped with
Steel storage tank bottom plate 2.
Specifically, the pile head elevation control of the first foundation pile 4 300mm below ringwall basis 3, the stake of the second foundation pile 5
Top mark height 300mm below medium-sand seam 7.
Preferably, the first foundation pile 4 and the second foundation pile 5 are cement fly ash gravel pile, and stake spacing is 3.5 times of stakes
Diameter is circumferentially disposed.
Preferably, the back fill course 6 is using the good graded broken stone of gradation and graded sand and stone puddled backfill, compacted coefficient
Not less than 0.96；Back fill course 6 passes to a part of foundation load on inter-pile soil, guarantees stake soil shared load, adjusts stake
Stress ratio between soil improves the intensity and stabilization of pile body, plays the potentiality of inter-pile soil；Graded broken stone has good with graded sand and stone
Permeable and diffusion-induced stress, carrying transitional function, and material source is extensive, is available locally.
Preferably, medium-sand seam 7 uses scleroid middle sand and coarse sand compaction in layers, every thickness degree 300mm, compacting system
Number is not less than 0.96；Medium-sand seam 7 excludes capillary underground water, and so that ground is pressurized uniformly and adjust load.
Preferably, sand and No. 30 first building petroleum asphalts are formulated in the use of tar sand insulating layer 8, middle sand and No. 30 first
The weight proportion of building petroleum asphalt is 93:7；Tar sand insulating layer 8 is the carrying contact surface of steel storage tank 1, and protection storage
Electrochemical corrosion does not occur for pot bottom, and the important measures that barrier lower section capillary water rises, compactness is good, waterproof, not will cause
The 2 corrosion failure oil leak of steel storage tank bottom plate, soaks molten tar sand insulating layer 8, more accelerates the destruction of tar sand insulating layer 8, prevent
Cause vicious circle；Tar sand insulating layer 8 has enough mechanical strengths, in the case where steel storage tank 1 fills entirely, does not occur big
Deformation, as composite foundation surface, bearing capacity meets the requirement of the safe oil storage of oil tank；There is good temperature to stablize simultaneously
Property, since asphalt mortar, bituminous mortar is a kind of elastic-plastic material, its major defect is: intensity varies with temperature, intensity when temperature increases
It reduces, intensity increases when temperature reduces；Tar sand insulating layer 8 has foot under the local highest temperature when proportion of the utility model
Enough intensity keeps certain plasticity in local maximum temperature, will not rupture.
The construction method of the utility model are as follows:
The pile foundation construction of the first foundation pile 4 and the second foundation pile 5 is carried out first, controls the absolute altitude of the first foundation pile 4 in ring
3 lower section 300mm of foundation of wall, the absolute altitude of the second foundation pile 5 is below the medium-sand seam 7 at 300mm；Wherein the first foundation pile 4 and
Two foundation piles 5 are all made of cement fly ash gravel pile, and 3.5 times of stake diameter stake spacing circumferential directions lay out pile；Foundation pile improves foundation bearing
Power, reduces settlement of foundation, and processing groundwork bearing capacity meets the 1 foundation bearing capacity requirement of top steel storage tank；
Further, it excavates ringwall basis 3 one and encloses foundation pit at annulus, carry out ringwall basis 3 and construct, ringwall basis 3 is constructed
Reach intensity requirement after maintenance；
Further, back fill course 6 in ringwall basis 3 is backfilled using the good rubble of gradation, sandstone, compaction in layers is returned
It fills out, compacted coefficient 0.96；Medium-sand seam 7 uses in scleroid in ringwall basis 3, coarse sand backfills, compaction in layers backfill,
Compacted coefficient is 0.96；
It constructs finally, carrying out tar sand insulating layer 8 in ringwall basis 3, after being conserved to tar sand insulating layer 8, by steel
1 ontology of storage tank bottom plate 2 and steel storage tank processed is mounted on the upper surface of ringwall basis 3 and tar sand insulating layer 8, and construction finishes.
The advantages of the utility model are as follows: the utility model by the stake top absolute altitude of the first foundation pile 4 below ringwall basis 3,
The stake top absolute altitude of second foundation pile 5 is lifted to lower section at 7 bottom of medium-sand seam, to reduce in 1 ringwall basis 3 of steel storage tank
The earthwork excavated volume of original soil body and the backfill amount in later period, achieve the purpose that saving construction cost, shorten the construction period；In the utility model
The combination of foundation pile, ringwall basis 3, back fill course 6, medium-sand seam 7 and tar sand insulating layer 8 meets top steel storage tank 1 over the ground
The demand of base bearing capacity, further, while meeting foundation bearing capacity demand, the construction method of the utility model and often
It is consistent to advise Foundation Treatment process, construction technology is mature, efficient and convenient.
The above content is combine specific embodiment further detailed description of the utility model, and it cannot be said that
The specific implementation of the utility model is only limited to these instructions.For the utility model person of an ordinary skill in the technical field
For, without departing from the concept of the premise utility, a number of simple deductions or replacements can also be made, all should be considered as belonging to
In the protection scope of the utility model.
Claims (10)
1. a kind of steel storage tank basis composite foundation structure, characterized in that it comprises:
Ringwall basis, the ringwall basis is used to support steel storage tank；
First foundation pile, first foundation pile are set to immediately below ringwall basis and circumferentially disposed vertically；
Second foundation pile, second foundation pile are set in ringwall basis and circumferentially disposed vertically；
Back fill course, the back fill course are set to the second foundation pile upper surface and in ringwall bases；
Medium-sand seam, the medium-sand seam are set to back fill course upper surface and in ringwall bases；
Tar sand insulating layer, the tar sand insulating layer are set to medium-sand seam upper surface and in ringwall bases, the pitch
Sand insulating layer upper surface is concordant with ringwall basis upper surface.
2. steel storage tank basis according to claim 1 composite foundation structure, it is characterised in that: ringwall basis upper end
Face is basseted, and steel storage tank bottom outer-edge is located on the upper surface of the ringwall basis.
3. steel storage tank basis according to claim 2 composite foundation structure, it is characterised in that: the ringwall basis uses
Armored concrete material is made.
4. steel storage tank basis according to claim 1 composite foundation structure, it is characterised in that: first foundation pile
Stake top absolute altitude is in ringwall ground beneath 300mm, the stake top absolute altitude of second foundation pile 300mm below medium-sand seam.
5. steel storage tank basis according to claim 4 composite foundation structure, it is characterised in that: first foundation pile and
The stake spacing of second foundation pile is 3.5 times of stake diameters.
6. steel storage tank basis according to claim 5 composite foundation structure, it is characterised in that: first foundation pile and
Second foundation pile is cement fly ash gravel pile.
7. steel storage tank basis according to claim 1 composite foundation structure, it is characterised in that: the back fill course uses
Graded broken stone and graded sand and stone puddled backfill, compacted coefficient are not less than 0.96.
8. steel storage tank basis according to claim 1 composite foundation structure, it is characterised in that: the medium-sand seam uses
Middle sand and coarse sand compaction in layers, every thickness degree 300mm, compacted coefficient are not less than 0.96.
9. steel storage tank basis according to claim 1 composite foundation structure, it is characterised in that: the tar sand insulating layer
Sand and No. 30 first building petroleum asphalts are formulated in.
10. steel storage tank basis according to claim 9 composite foundation structure, it is characterised in that: the middle sand and No. 30
The weight proportion of first building petroleum asphalt is 93:7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820616589.1U CN208280158U (en) | 2018-04-27 | 2018-04-27 | A kind of steel storage tank basis composite foundation structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820616589.1U CN208280158U (en) | 2018-04-27 | 2018-04-27 | A kind of steel storage tank basis composite foundation structure |
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| CN208280158U true CN208280158U (en) | 2018-12-25 |
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| CN201820616589.1U Active CN208280158U (en) | 2018-04-27 | 2018-04-27 | A kind of steel storage tank basis composite foundation structure |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110016928A (en) * | 2019-04-23 | 2019-07-16 | 上海太江建设工程有限公司 | Secondary pile connection construction method and its floor structure |
| CN110761316A (en) * | 2019-04-30 | 2020-02-07 | 中国石油工程建设有限公司华北分公司 | Prefabricated foundation ring beam prefabricating method and storage tank construction method applying prefabricated foundation ring beam prefabricating method |
| CN112554223A (en) * | 2020-10-26 | 2021-03-26 | 中石化南京工程有限公司 | Circumferential pile arrangement method for composite foundation |
-
2018
- 2018-04-27 CN CN201820616589.1U patent/CN208280158U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110016928A (en) * | 2019-04-23 | 2019-07-16 | 上海太江建设工程有限公司 | Secondary pile connection construction method and its floor structure |
| CN110761316A (en) * | 2019-04-30 | 2020-02-07 | 中国石油工程建设有限公司华北分公司 | Prefabricated foundation ring beam prefabricating method and storage tank construction method applying prefabricated foundation ring beam prefabricating method |
| CN110761316B (en) * | 2019-04-30 | 2021-10-01 | 中国石油工程建设有限公司华北分公司 | Prefabricated foundation ring beam prefabricating method and storage tank construction method applying prefabricated foundation ring beam prefabricating method |
| CN112554223A (en) * | 2020-10-26 | 2021-03-26 | 中石化南京工程有限公司 | Circumferential pile arrangement method for composite foundation |
| CN112554223B (en) * | 2020-10-26 | 2022-05-20 | 中石化南京工程有限公司 | Circumferential pile arrangement method for composite foundation |
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