CN105839658B - Steel tank precast concrete conical section formula ringwall basis - Google Patents

Steel tank precast concrete conical section formula ringwall basis Download PDF

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Publication number
CN105839658B
CN105839658B CN201610242748.1A CN201610242748A CN105839658B CN 105839658 B CN105839658 B CN 105839658B CN 201610242748 A CN201610242748 A CN 201610242748A CN 105839658 B CN105839658 B CN 105839658B
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ringwall
component
precast concrete
basis
positive cone
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CN105839658A (en
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何国富
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Sinopec Engineering Group Co Ltd
Sinopec Shanghai Engineering Co Ltd
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Sinopec Engineering Group Co Ltd
Sinopec Shanghai Engineering Co Ltd
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    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D27/00Foundations as substructures
    • E02D27/32Foundations for special purposes
    • E02D27/38Foundations for large tanks, e.g. oil tanks

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Revetment (AREA)

Abstract

The present invention relates to a kind of steel tank precast concrete conical section formula ringwall basis, mainly solve to be difficult to standard component Prefabrication, the irrational problem of ringwall stress in the prior art.The present invention is by using a kind of steel tank precast concrete conical section formula ringwall basis, combine to form continuous loop foundation of wall from embedded connection with the mutual of back taper component by a series of positive cone components, utilize the effect of top vertical load, axial precompression vertical force being converted into ringwall component, to reduce lateral axial tension caused by active earth pressure in ringwall, coordinate the additional banding body of outer surface arrangement in ringwall positive cone component, realize the balance of axial force in ringwall basis, preferably solves above mentioned problem with the technical scheme for reaching the optimal cost performance of ringwall basic engineering, available in steel tank precast concrete conical section formula ringwall.

Description

Steel tank precast concrete conical section formula ringwall basis
Technical field
The present invention relates to a kind of steel tank precast concrete conical section formula ringwall basis.
Background technology
Base of steel tank typically has bank protection formula, ringwall (beam) formula, and ring wall foundation sinks because adjustment tank body basis is uneven Positive effect is dropped, and is taken up an area less, is suitable for all kinds of soft soil foundations and is widely adopted.Ring wall foundation can be divided into again cast-type and It is prefabricated assembled, but connected during the connection of prefabricated assembled template utilization rate bottom, particularly prefabricated component using post-cast strip (sleeper form) Mode is connect, it is necessary to set up template in addition and set reinforcing bar, construction trouble, curing period length, thus it is basic using existing in engineering at present Pour formula ringwall basis.
CN201210273498.X discloses a kind of ringwall basis, is made up of multiple foregoing prefabricated components. CN201210273498.X also discloses a kind of ringwall basis spigot-and-socket prefabricated components, and the prefabricated components are shaped as ringwall base The arc component that plinth is formed along after girth decile, the prefabricated components both ends are arranged to tongue and groove.
Either prefabricated or cast-in-place ringwall basis, is all that ringwall is regarded as to a circle in design method and in theory Shape curved beam, its form of fracture are mostly rectangle or positive taper type, and the design of curved beam is false with steel concrete basic part plane section Be set to basis, on any section, caused component internal force to draw, it is curved and turn round, it be a kind of tunneling boring it is continuous, using tension to set The concrete component of major control internal force is counted, and generally requires configuration reinforcement.Obviously, from ringwall, as beam, this stress is special From the point of view of point, the form in continuous section is not a kind of optimum way.The scheme for being easier to expect is (or outer in ringwall section Side) set along the axial deformed bar of curved beam, by applying prestressing force come balancing axial pulling force, but prestressing force cost is high and deposits It is also not high in stress relaxation phenomenon, technology cost performance.
The content of the invention
The technical problems to be solved by the invention are to be difficult to standard component Prefabrication, ringwall stress in the prior art not A kind of the problem of reasonable, there is provided new steel tank precast concrete conical section formula ringwall basis.It is pre- that the basis is used for steel tank In concrete conical section formula ringwall processed, there is the advantages of can carrying out standard component Prefabrication, ringwall reasonable stress.
To solve the above problems, the technical solution adopted by the present invention is as follows:A kind of steel tank precast concrete conical section Formula ringwall basis, it is characterised in that the ringwall basis includes following technical characteristic:
(1) ringwall basis is segmentation precast concrete;Division number determines according to basic diameter;Section length Determined according to basic diameter;Ringwall cross section is rectangle or positive taper type, and its height and width are according to accumulating technique and ground Matter condition determines;
(2) division number is even number, and circumferentially impartial;
(3) segmentation precast concrete is divided into two kinds, and one kind is positive cone component, i.e., in segmentation precast concrete Circumferentially two axial sides are positive cone inclined-plane, and another kind is back taper component, i.e., on segmentation precast concrete edge Two sides of circumference axial direction are back taper inclined-plane;The combination of two kinds of components forms continuous loop foundation of wall;The top of positive cone component Face absolute altitude is less than the top surface absolute altitude of back taper component;
During (4) two kinds of segmentation precast concrete construction combinations, after ground on the scene first measures accurate positioning, interval peace Positive cone component is put, then disposes back taper component between the positive cone component at interval again;Again in positive cone component and back taper Medium-fine sand and closely knit is filled in gap between shape component;
(5) gap length between positive cone component and back taper component is unlimited, close according to scantling size and filling sand Real mass controlling extent determines, but cannot be less than 25mm;Gap basset part outside using flexible seal strip material close, Prevent the sand flow in gap from losing;
(6) outside that positive cone component bassets, pre-sets built-in fitting, treats that above-mentioned construction is completed to form ringwall base After plinth, the annular banding part to ringwall is formed in outside by the reinforcing bar or steel wire cable of adjusting tensioning degree, by ringwall again Tensioning fastening;The quantity and size of annular banding part determine according to calculating;
(7) after the completion of storage tank filling water test, the gap between positive cone component top surface and tank bottom is filled up with blast.
In above-mentioned technical proposal, it is preferable that the section length is 1.0~2.0 times of ringwall height.
Prefabricated assembled ringwall basis sets reinforcement construction to bother despite the presence of construction formwork utilization rate bottom in post-cast strip, The problems such as concrete curing time is long and constrain the actual use of this base form, but concrete using it is prefabricated assembled easily It is that cast-type ringwall basis is incomparable the characteristics of industrialized standard part produces, if invention one kind is suitable for Storage Tank Construction Feature, meeting ringwall loading characteristic, the reasonable efficient prefabricated distinctive make of plain concrete component, overcomes ringwall base Deficiency in plinth design method concept, upper load effect and ringwall basis itself geometrically construction feature are made full use of, The basis of so this form will have good application value.Made using a kind of segmentation on the prefabricated ringwall basis of steel tank The plain concrete component of work, formation is combined continuously from embedded connection with the mutual of back taper component by a series of positive cone components Ringwall basis, utilizes the effect of top vertical load, axial precompression vertical force being converted into ringwall component, to reduce ring Axial tension caused by lateral active earth pressure within the walls, coordinate the additional banding of outer surface arrangement in ringwall positive cone component Body, the balance of axial force in ringwall basis is realized, to reach the optimal cost performance of ringwall basic engineering.Spy of the present invention The type of attachment of different shape prefabricated components, very easily it can carry out standard component Prefabrication, structure manufacture quality in factory It is guaranteed, construction cost is not only greatlyd save, and ringwall stress is more reasonable.By construct it is a kind of it is ingenious and it is succinct, Basic component itself geometry can be made full use of to be possessed mutual from embedding effect, precompressed is produced in ringwall component to reach The prefabricated segmented concrete ring foundation of wall of power, it is greatly improved the technical and economy of ringwall basic engineering.Achieve compared with Good technique effect.
Brief description of the drawings
Fig. 1 is the top view on ringwall of the present invention basis;
Fig. 2 is the profile of A-A ' directions shown in Fig. 1;
Fig. 3 is the front view of B-B ' directions shown in Fig. 1;
Fig. 4 is positive cone component 1;
Fig. 5 is back taper component 2.
In Fig. 1~3,1 is positive cone component;2 be back taper component;3 be annular banding part;4 be back-up sand in gap;5 For anti-hourglass strip of paper used for sealing;6 be tank body;7 be on the inside of ringwall;8 be on the outside of ringwall;9 be outside terrace;10 be that water-filling is complete in this gap tank Filled into rear blast closely knit;11 be fastener fixation built-in fitting;12 be top tank body bottom plate;13 be tensioning apparatus.
Below by embodiment, the invention will be further elaborated, but is not limited only to the present embodiment.
Embodiment
【Embodiment 1】
The present invention provides a kind of steel tank precast concrete conical section formula ringwall basis, (to divide as shown in Fig. 1~Fig. 5 Exemplified by hop count 12, ringwall cross section rectangle), including following technical conditions:
(1) ringwall basis is segmentation precast concrete;(i.e. arc section) number is segmented according to basic diameter (one As it is identical with tank diameter) determine;Section length (i.e. arc length) determines according to basic diameter, but with 1.0~2.0 times of ringwalls It is a height of optimal;Ringwall cross section is rectangle or positive taper type, and its height and width are true according to accumulating technique and geological conditions situation It is fixed;
(2) division number is even number, and circumferentially impartial;
(3) segmentation precast concrete is divided into two kinds, and one kind is positive cone component, i.e., in segmentation precast concrete Circumferentially two axial sides are positive cone inclined-plane, and another kind is back taper component, i.e., on segmentation precast concrete edge Two sides of circumference axial direction are back taper inclined-plane;The combination of two kinds of components forms continuous loop foundation of wall;The top of positive cone component Face absolute altitude is slightly below the top surface absolute altitude of back taper component;
During (4) two kinds of component construction combinations, after ground on the scene first measures accurate positioning, interval placement positive cone component, Then back taper component is disposed between the positive cone component at interval again;Again between positive cone component and back taper component between The interior filling medium-fine sand of gap is simultaneously closely knit;
(5) gap length between positive cone component and back taper component is unlimited, close according to scantling size and filling sand Real mass controlling extent determines, but cannot be less than 25mm;The basset outside of part of gap can use Traditional flexible strip of paper used for sealing material Material closing, prevents the sand flow in gap from losing;
(6) outside that positive cone component bassets, pre-sets built-in fitting, treats that above-mentioned construction is completed to form ringwall base After plinth, the circumferential band to ringwall is formed in outside by the reinforcing bar (or other conventional materials such as steel wire cable) of adjusting tensioning degree Tight part, ringwall is tensioned to fastening again;The quantity and size of annular banding part determine according to calculating;
(7) after the completion of storage tank filling water test, the gap between positive cone component top surface and tank bottom is filled up with blast.

Claims (2)

1. a kind of steel tank precast concrete conical section formula ringwall basis, it is characterised in that the ringwall basis includes as follows Technical characteristic:
(1) ringwall basis is segmentation precast concrete;Division number determines according to basic diameter;Section length according to Basic diameter determines;Ringwall cross section is rectangle or positive taper type, and its height and width are according to accumulating technique and geology bar Part situation determines;
(2) division number is even number, and circumferentially impartial;
(3) segmentation precast concrete is divided into two kinds, and one kind is positive cone component, i.e., in segmentation precast concrete edge circle Two sides of all axial directions are positive cone inclined-plane, and another kind is back taper component, i.e., in segmentation precast concrete circumferentially Two sides of axial direction are back taper inclined-plane;The combination of two kinds of components forms continuous loop foundation of wall;The top surface mark of positive cone component Height is in the top surface absolute altitude of back taper component;
During (4) two kinds of segmentation precast concrete construction combinations, after ground on the scene first measures accurate positioning, interval placement is just Cone-shaped component, back taper component is then disposed between the positive cone component at interval again;Again in positive cone component and back taper structure Medium-fine sand and closely knit is filled in gap between part;
(5) gap length between positive cone component and back taper component is unlimited, according to scantling size and fills the closely knit matter of sand Measure controlling extent to determine, but cannot be less than 25mm;Gap basset part outside using flexible seal strip material close, prevent Sand flow in gap loses;
(6) outside that positive cone component bassets, pre-sets built-in fitting, treats that above-mentioned construction is completed to form ringwall basis Afterwards, the annular banding part to ringwall is formed in outside by the reinforcing bar or steel wire cable of adjusting tensioning degree, ringwall is opened again It is tightly solid;The quantity and size of annular banding part determine according to calculating;
(7) after the completion of storage tank filling water test, the gap between positive cone component top surface and tank bottom is filled up with blast.
2. steel tank precast concrete conical section formula ringwall basis according to claim 1, it is characterised in that the segmentation Length is 1.0~2.0 times of ringwall height.
CN201610242748.1A 2016-04-19 2016-04-19 Steel tank precast concrete conical section formula ringwall basis Active CN105839658B (en)

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CN109183830A (en) * 2018-07-22 2019-01-11 绿山高科建设科技有限公司 A kind of simple splice type prefabricated buildings structure and its building method
CN110409479B (en) * 2019-07-10 2024-03-26 浙江大学 Self-adaptive stable control fan foundation

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DE50309830D1 (en) * 2002-11-15 2008-06-26 Flooring Technologies Ltd Device consisting of two interconnected construction panels and an insert for locking these building panels
CN103572771B (en) * 2012-08-02 2016-12-21 中国石油化工集团公司 Ringwall basis spigot-and-socket prefabricated components and ringwall basis
JP6136606B2 (en) * 2013-06-11 2017-05-31 株式会社Ihi Storage tank construction method
CN103643705B (en) * 2013-12-12 2016-04-13 中石化上海工程有限公司 Steel tank ringwall basic foundation local subsidence reinforcement

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