CN107269085B - A kind of construction method of large-diameter concrete silo top conical shell structure - Google Patents
A kind of construction method of large-diameter concrete silo top conical shell structure Download PDFInfo
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- CN107269085B CN107269085B CN201710557043.3A CN201710557043A CN107269085B CN 107269085 B CN107269085 B CN 107269085B CN 201710557043 A CN201710557043 A CN 201710557043A CN 107269085 B CN107269085 B CN 107269085B
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- 238000010276 construction Methods 0.000 title claims abstract description 90
- 239000004567 concrete Substances 0.000 title claims abstract description 26
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 104
- 239000010959 steel Substances 0.000 claims abstract description 104
- 230000002787 reinforcement Effects 0.000 claims abstract description 21
- 238000009434 installation Methods 0.000 claims description 5
- 238000005266 casting Methods 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 238000000034 method Methods 0.000 abstract description 7
- 239000000463 material Substances 0.000 abstract description 2
- 238000013459 approach Methods 0.000 abstract 1
- 230000003014 reinforcing effect Effects 0.000 description 3
- 241000237942 Conidae Species 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000009415 formwork Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000009417 prefabrication Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H7/00—Construction or assembling of bulk storage containers employing civil engineering techniques in situ or off the site
- E04H7/22—Containers for fluent solids, e.g. silos, bunkers; Supports therefor
- E04H7/24—Constructions, with or without perforated walls, depending on the use of specified materials
- E04H7/26—Constructions, with or without perforated walls, depending on the use of specified materials mainly of concrete, e.g. reinforced concrete or other stone-like materials
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- General Engineering & Computer Science (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Rod-Shaped Construction Members (AREA)
- Conveying And Assembling Of Building Elements In Situ (AREA)
Abstract
The invention belongs to the construction fields of silo top conical shell structure, it is related to a kind of construction method of diameter Silo silo roof conical shell structure, the structure combined using skeleton with cone conformation structure and steel bar truss floor support plate, using umbrella keel structure as support, the problem of building operation platform is needed before overcoming aforementioned construction in the prior art, therefore the problem of also there is no the later periods to operation platform progress large area dismounting, to greatly shorten construction period, reduce cost brought by operation platform, the steel bar truss floor support plate is process using the reinforcement frame in concrete floor, the access approaches of material are extensive, it is low in cost, it is worth a wide range of to promote and apply.
Description
Technical field
The invention belongs to structural engineering technical fields, and in particular to a kind of large-diameter concrete silo top conical shell knot
The construction method of structure.
Background technique
With the rapid industrial development in our country and to the raising of environmental protection requirement, large-diameter concrete silo is obtained largely
Using.The bulkhead construction of silo has generallyd use sliding mode technology at present, and the technology short construction period, construction effect is good, by
Will be widely welcomed for market, but the construction of the silo roof conical shell of silo always exists many technical problems, the master of silo roof conical shell construction
Want method there are several types of:
1, full hall frame formwork system: silo roof is built using expiring by the way of hall builds scaffold from bottom to top in silo
Operation platform, expend a large amount of manpower and material resources, cause construction cost high.
2, steel truss structure and the combined system of center derrick: increase the architectural construction of center derrick in construction, in
Heart derrick is support column, and builds the platform that steel truss structure is constructed as silo roof on center derrick top, is built in conical shell construction
It is removed at rear, construction cost is also higher.
3, steel truss support system: the system is using in such a way that ground is prefabricated, the conical shell space of steel truss support structure
Grid structure is whole shaped like canopy, and centre is upper collar tie beam structure, and stock, steel truss support structure week are hung with below upper collar tie beam
Circle with stock lower end has reinforcing bar zipper to be attached, and reinforcing bar zipper upper berth is set up defences protective net, and whole with the steel truss support structure
Pouring for silo roof conical shell is carried out for operation platform, after the completion of construction, needs to remove the steel truss support structure, and silo construction
Specially reserved construction member outlet is had no afterwards, therefore after can only being disassembled in silo, by large size from the aperture of silo roof
Loop wheel machine takes out, and construction cost is high, and construction period is longer, and applies man-hour requirement and add to hit damage when protection avoids taking out construction member
The bad silo roof newly poured.
As it can be seen that the mode of existing silo roof conical shell construction is there are numerous drawbacks, these drawbacks exactly limit silo construction into
The principal element of degree and cost.Therefore, seek a kind of save the cost, easy construction silo top conical shell structure construction method
It is extremely urgent.
Summary of the invention
The present invention provides a kind of large-diameter concrete silo top to solve above-mentioned problems of the prior art
The construction method of conical shell structure.The building of operation platform, scaffold and template is effectively prevented using the method for the present invention, is dismantled
Constructing operation, required building element is less and mostly prefabricated components, helps to shorten the construction period, saves construction cost.It utilizes simultaneously
Ring on circumferential reinforcement fabrication circumferential reinforcement truss floor support plate and the oblique column of steel truss, conical shell space grid structure steel truss in conical shell
Beam can partially substitute Reinforcement in conical shell, after having poured concrete, form the stiffness in armored concrete conical shell structure
Steel framed concrete beam increases the degree of safety of structure in the case where the steel content of conical shell structure is basically unchanged.
The specific technical solution that the present invention uses is:
A kind of construction method of large-diameter concrete silo top conical shell structure, the construction method be in silo construction
It is carried out on the basis of the column built-in fitting of lower ring pre-plugged, the construction method of silo roof conical shell structure includes the following steps:
A, prefabricated:
Ring beam, steel bar truss floor support plate on the oblique column of production steel truss, steel truss, it is spare；
B, the oblique column of steel truss is installed:
In silo construction, one group of column built-in fitting is buried in lower ring, the concrete strength of lower ring is waited to reach work
After journey construction requirement, the oblique column of steel truss is installed on column built-in fitting；
C, umbrella keel structure is assembled:
Ring beam on hoisting prefabricated steel truss, the upper end of ring beam on steel truss and the oblique column of steel truss is fixed to be formed
Umbrella keel structure；
D, conical shell space grid structure is assembled:
Steel bar truss floor support plate is lifted and is laid with, steel bar truss floor support plate and the oblique column of steel truss are fixedly connected to form conical shell
Then skeleton is laid with longitudinal reinforcement and circumferential reinforcement on conical shell skeleton to form conical shell space grid structure；
E, the casting concrete on conical shell space grid structure forms silo top conical shell structure.
In the step b, during silo construction, interim built-in fitting, the oblique column installation of steel truss are buried on the inside of bulkhead
When, temporary support columns are installed on interim built-in fitting, temporary support columns both ends respectively with interim built-in fitting and the oblique column of steel truss
It is connected, the oblique column of steel truss, temporary support columns, bulkhead form triangular support configurations.
In the step b, the oblique column of steel truss is at least 3, in the step c, after umbrella keel structure is formed, according to
The quantity for the oblique column of steel truss that engineering construction requires, lifts the oblique column of remaining steel truss.
In the step d, the circumferential of multilayer is formed after all steel bar truss floor support plates and the oblique column installation of steel truss and is supported
Structure, lower ring are supported undermost circumferential support construction, and the circumferential support construction of lower layer supports the circumferential direction on upper layer
Structure is supported.
The beneficial effects of the present invention are:
Permanent mould of the construction method of the present invention using the profiled sheet of steel bar truss floor support plate lower part as conical shell concrete
Plate forms space net rack knot by ring beam, steel bar truss floor support plate, longitudinal reinforcement, circumferential reinforcement on the oblique column of steel truss, steel truss
Structure undertakes the construction loads of conical shell as silo cone shell form bracing system.It is needed before overcoming aforementioned construction in the prior art
The problem of erection construction platform, thus also there is no the later period to operation platform carry out large area dismounting the problem of, thus greatly
Construction period is shortened, cost brought by operation platform is reduced, is worth a wide range of and promotes and applies.
Detailed description of the invention
Fig. 1 is umbrella keel structure schematic diagram of the invention；
Fig. 2 is the top view of specific embodiment 2；
Fig. 3 is the schematic diagram of specific embodiment 3；
In attached drawing, 1, the oblique column of steel truss, 2, ring beam on steel truss, 3, steel bar truss floor support plate, 4, circumferential support construction,
5, lower ring, 6, column built-in fitting, 7, interim built-in fitting, 8, bulkhead, 9, temporary support columns.
Specific embodiment
With reference to the accompanying drawing and specific embodiment the invention will be further described:
Specific embodiment 1, the present invention are a kind of construction method of large-diameter concrete silo top conical shell structure, the construction
Method is carried out on the basis of the column built-in fitting 6 of 5 pre-plugged of lower ring in silo construction, and silo roof conical shell structure is applied
Work method includes the following steps:
A, prefabricated:
Ring beam 2, steel bar truss floor support plate 3 on the oblique column 1 of production steel truss, steel truss, it is spare；
B, the oblique column 1 of steel truss is installed:
In silo construction, one group of column built-in fitting 6 is buried in lower ring 5, and the concrete strength of lower ring 5 is waited to reach
After engineering construction requires, the oblique column 1 of steel truss is installed on column built-in fitting 6；
C, umbrella keel structure is assembled:
Ring beam 2 on hoisting prefabricated steel truss, by the upper end of ring beam 2 on steel truss and the oblique column 1 of steel truss it is fixed to
Form umbrella keel structure；
D, conical shell space grid structure is assembled:
Steel bar truss floor support plate 3 is lifted and is laid with, steel bar truss floor support plate 3 is fixedly connected to form with the oblique column 1 of steel truss
Then conical shell skeleton is laid with longitudinal reinforcement and circumferential reinforcement on conical shell skeleton to form conical shell space grid structure；
E, the casting concrete on conical shell space grid structure forms silo top conical shell structure.
Complete umbrella keel knot as shown in Figure 1 first in the present invention by the way of prefabrication, in build process
The assembling of structure, subsequent construction not only can be using the umbrella keel structure as operation platform, but also umbrella keel structure is also reinforcing bar
The support system of concrete silo silo roof conical shell, therefore it is not related to the dismounting problem after construction, therefore existing skill is not present
It builds operation platform in art, the problem of construction later period is removed again, has in construction cost and on construction period, difficulty of construction
Reduction, is conducive to promote and apply.
Specific embodiment 2 during silo construction, is buried interim pre- on the inside of bulkhead 8 as shown in Fig. 2, the step b
Embedded part 7, interim built-in fitting 7 are that reserved steel bar end or Bolt plate are pacified on interim built-in fitting 7 when the oblique column 1 of steel truss is installed
Temporary support columns 9 are filled, temporary support columns both ends are connected with interim built-in fitting 7 and the oblique column 1 of steel truss respectively, the oblique column of steel truss
1, temporary support columns 9, bulkhead 8 form triangular support configurations.
In the step b, in the step b, the oblique column 1 of steel truss is at least 3, in the step c, umbrella keel knot
After being configured to, according to the quantity for the oblique column 1 of steel truss that engineering construction requires, the oblique column 1 of remaining steel truss is lifted；
The present embodiment is the further improvement to umbrella keel structure, when practice of construction, completes it in umbrella keel structure
Before, operation platform is had no, therefore difficulty of construction is larger, in order to overcome the problem, first using silo side wall top as platform, under
The oblique column 1 of at least three steel truss is equally spacedly lifted on ring beam 5, and it is oblique to above-mentioned steel truss to lift temporary support columns 9 simultaneously
Column 1 is supported, so that the oblique column 1 of steel truss, temporary support columns 9, bulkhead 8 form triangular support configurations, after this step, is hung
Ring beam 3 on prefabricated steel truss is filled, the oblique column 1 of steel truss and ring beam 3 on steel truss is fixed, the umbrella formed at this time
Keel structure is the more sparse structure of skeleton, is operation platform in this umbrella keel structure, lifts remaining steel truss and tiltedly stand
(the oblique column 1 of steel truss that dotted line indicates in Fig. 2, the oblique column 1 of the steel truss is not required to be equipped with temporary support columns 9 column 1, by existing
Umbrella keel complete self-supporting), complete umbrella keel structure is formed, removes temporary support columns 9 at this time and by it from silo top
The drawbacks of hanging in the gap of the umbrella keel structure in portion, save subsequent dismounting, the column built-in fitting 6, interim built-in fitting 7
For reserved steel bar end, bolt base, in order to later period attended operation.
Since umbrella keel structure has formed and stablized self-supporting, lift the remaining oblique column 1 of steel truss it
Preceding that temporary support columns 9 are removed and hung, umbrella keel structure gap is larger at this time, constructs convenient for crane, reduces and applies
Work difficulty avoids damage appearance of colliding with caused by the hoisting process being likely to occur.
Specific embodiment 3, as shown in figure 3, in the step d, the fan-shaped structure of steel bar truss floor support plate 3 is its downside
The truss structure for welding bottom plate in the step d, is formed after all steel bar truss floor support plates 3 and the oblique installation of column 1 of steel truss
The circumferential support construction 4 of multilayer, lower ring 5 are supported undermost circumferential support construction 4, the circumferential support construction of lower layer
The circumferential support construction 4 on 4 pairs of upper layers is supported.So that circumferential support construction 4 does not need outside by the oblique formation of column 1 of steel truss
The self-supporting system for adding support facility, gap after multilayer circumferential direction support construction 4 laminates, mutually between circumferential direction support construction 4
Mutually overlap joint occlusion, forms sealing, according to the optional welding of construction requirement or closure gap filler.And with the increasing of the construction number of plies
Add, be gradually expanded to the construction space of operator, helps to reduce high altitude operation risk, accelerate construction progress.
Specific embodiment 4, in the step d, after conical shell space truss structure is completed, along conical shell space truss structure
Frame body upper surface be laid with longitudinal reinforcement along longitudinal direction and circumferential reinforcement circumferentially, bind or form grid after being welded and fixed
Shape structure, longitudinal reinforcement, circumferential reinforcement form conical shell space net rack with steel bar truss floor support plate 3, the fixation of umbrella keel structure again
Structure, the structure can self-contained support, have preferable bearing capacity.The fenestral fabric that longitudinal reinforcement and circumferential reinforcement are formed
After concreting, as the upper surface profile of conical shell, while proof strength, the beautiful journey of whole silo roof conical shell is improved
It spends, ring beam 2 on the oblique column 1 of the steel truss, conical shell steel truss, part substitutes conical shell middle skeleton beam and upper ring in traditional construction
Reinforcement in beam, the steel bar truss floor support plate 3 is using the steel bar stress processing in traditional concrete conical shell
It forms, part substitutes the circumferential steel bar stress in concrete conical shell, after fixing with the oblique column 1 of steel truss, forms conical shell sky
Between truss structure system, therefore steel content is almost unchanged compared with the mode that existing scaffold support template is poured.
Stiffness steel reinforced concrete after casting concrete, in space grid structure System forming armored concrete conical shell structure
Component in the case where the steel content of conical shell structure is basically unchanged, and increases the degree of safety of structure.The present invention is oblique by steel truss
Ring beam 2, steel bar truss floor support plate 3, longitudinal reinforcement, circumferential reinforcement form conical shell space net rack knot on column 1, conical shell steel truss
Structure undertakes the construction loads of conical shell as silo cone shell form bracing system, gets rid of construction member or the construction of other peripheral hardwares
Platform reduces integral construction cost, shortens the construction period.
Claims (3)
1. a kind of construction method of large-diameter concrete silo top conical shell structure, which is characterized in that the construction method is in cylinder
Storehouse carries out on the basis of column built-in fitting (6) of lower ring (5) pre-plugged when constructing, the construction method of silo roof conical shell structure
Include the following steps:
A, prefabricated:
Ring beam (2), steel bar truss floor support plate (3) in the production oblique column of steel truss (1), steel truss, it is spare；
B, the oblique column of steel truss (1) is installed:
In silo construction, one group of column built-in fitting (6) is buried in lower ring (5), and the concrete strength of lower ring (5) is waited to reach
After requiring to engineering construction, the oblique column of steel truss (1) is installed on column built-in fitting (6)；
C, umbrella keel structure is assembled:
Ring beam (2) on hoisting prefabricated steel truss, by the upper end of ring beam on steel truss (2) and the oblique column of steel truss (1) it is fixed from
And form umbrella keel structure；
D, conical shell space grid structure is assembled:
It lifts and is laid with steel bar truss floor support plate (3), steel bar truss floor support plate (3) is fixedly connected with shape with the oblique column of steel truss (1)
At conical shell skeleton, it is laid with longitudinal reinforcement and circumferential reinforcement on conical shell skeleton then to form conical shell space grid structure；
E, the casting concrete on conical shell space grid structure forms silo top conical shell structure；
In the step b, during silo construction, buried interim built-in fitting (7) on the inside of bulkhead (8), the oblique column of steel truss (1)
When installation, on interim built-in fitting (7) install temporary support columns (9), temporary support columns both ends respectively with interim built-in fitting (7) and
The oblique column of steel truss (1) is connected, and the oblique column of steel truss (1), temporary support columns (9), bulkhead (8) form triangular support configurations.
2. a kind of construction method of large-diameter concrete silo top conical shell structure according to claim 1, feature exist
In: in the step b, the oblique column of steel truss (1) is at least 3, in the step c, after umbrella keel structure is formed, according to work
The quantity of the oblique column of the steel truss of journey construction requirement (1) lifts the oblique column of remaining steel truss (1).
3. a kind of construction method of large-diameter concrete silo top conical shell structure according to claim 1, feature exist
In: in the step d, the circumferential of multilayer is formed after all steel bar truss floor support plates (3) and the oblique column of steel truss (1) installation and is supported
Structure (4), lower ring (5) are supported undermost circumferential support construction (4), and the circumferential support construction (4) of lower layer is to upper
The circumferential support construction (4) of layer is supported.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201710557043.3A CN107269085B (en) | 2017-07-10 | 2017-07-10 | A kind of construction method of large-diameter concrete silo top conical shell structure |
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| CN201710557043.3A CN107269085B (en) | 2017-07-10 | 2017-07-10 | A kind of construction method of large-diameter concrete silo top conical shell structure |
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| CN107269085A CN107269085A (en) | 2017-10-20 |
| CN107269085B true CN107269085B (en) | 2019-08-06 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108678181B (en) * | 2018-05-28 | 2020-08-21 | 中国二十二冶集团有限公司 | High-altitude construction method for steel truss and concrete combined structure on top of bin |
| CN109184189B (en) * | 2018-08-30 | 2022-08-16 | 郑州建工集团有限责任公司 | Construction method for conical shell silo top structure of large-diameter silo |
| CN113863753B (en) * | 2021-09-16 | 2023-03-31 | 中国一冶集团有限公司 | Crushing reduction silo and construction method thereof |
| CN114215251A (en) * | 2022-01-28 | 2022-03-22 | 中国建筑西南设计研究院有限公司 | Steel grid sprayed concrete combined dome structure and construction method thereof |
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| CN102296858A (en) * | 2011-06-29 | 2011-12-28 | 中建二局第三建筑工程有限公司 | Roof steel structure for cement production line clinker warehouse and construction method thereof |
| CN202401807U (en) * | 2011-12-31 | 2012-08-29 | 中平能化建工集团有限公司土建处 | Oblique-cone top cover supporting device of large-diameter high silo |
| CN103015782A (en) * | 2012-12-14 | 2013-04-03 | 中煤建筑安装工程集团有限公司 | Construction platform and construction method for integrating silo roof and silo wall slip form |
| KR101346569B1 (en) * | 2013-07-11 | 2014-01-02 | 주식회사 복주 | Storage tank and method of manufacturing storage tank |
| CN104100122A (en) * | 2014-08-01 | 2014-10-15 | 中国化学工程第三建设有限公司 | Construction method of cone-shaped top structure of large silo |
-
2017
- 2017-07-10 CN CN201710557043.3A patent/CN107269085B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102296858A (en) * | 2011-06-29 | 2011-12-28 | 中建二局第三建筑工程有限公司 | Roof steel structure for cement production line clinker warehouse and construction method thereof |
| CN202401807U (en) * | 2011-12-31 | 2012-08-29 | 中平能化建工集团有限公司土建处 | Oblique-cone top cover supporting device of large-diameter high silo |
| CN103015782A (en) * | 2012-12-14 | 2013-04-03 | 中煤建筑安装工程集团有限公司 | Construction platform and construction method for integrating silo roof and silo wall slip form |
| KR101346569B1 (en) * | 2013-07-11 | 2014-01-02 | 주식회사 복주 | Storage tank and method of manufacturing storage tank |
| CN104100122A (en) * | 2014-08-01 | 2014-10-15 | 中国化学工程第三建设有限公司 | Construction method of cone-shaped top structure of large silo |
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