CN114961291A - Modularized installation method for dust removal ventilation shaft in steelmaking environment - Google Patents
Modularized installation method for dust removal ventilation shaft in steelmaking environment Download PDFInfo
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- CN114961291A CN114961291A CN202210562841.6A CN202210562841A CN114961291A CN 114961291 A CN114961291 A CN 114961291A CN 202210562841 A CN202210562841 A CN 202210562841A CN 114961291 A CN114961291 A CN 114961291A
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- ventilation shaft
- hoisting
- clerestory
- frame
- upper section
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/14—Conveying or assembling building elements
- E04G21/16—Tools or apparatus
- E04G21/161—Handling units comprising at least considerable parts of two sides of a room or like enclosed space
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F17/00—Vertical ducts; Channels, e.g. for drainage
- E04F17/02—Vertical ducts; Channels, e.g. for drainage for carrying away waste gases, e.g. flue gases; Building elements specially designed therefor, e.g. shaped bricks or sets thereof
Abstract
The invention discloses a modular installation method for a dust removal ventilation shaft in a steelmaking environment, which belongs to the field of ventilation shaft installation, and comprises the following specific steps of reasonably dividing the ventilation shaft into a lower section and an upper section; the second step is that: assembling the ground on site in sections; assembling the lower section of the ventilation shaft; assembling the upper section of the ventilation shaft; the third step: carrying out modularized hoisting; by adopting on-site ground sectional assembly and modularized hoisting, the invention effectively ensures the construction safety, reduces the overhead operation and reduces the safety risk.
Description
Technical Field
The invention belongs to the field of ventilation shaft installation, and particularly relates to a modularized installation method for a dust removal ventilation shaft in a steelmaking environment.
Background
In the current large-scale steelmaking factory building construction engineering, for satisfying large-scale steelmaking factory building internal environment dust removal ventilation effect, be reinforced strideing factory building roofing and being equipped with dust removal ventilation shaft system, because dust removal ventilation shaft height is high, and overall dimension is big, and the minor component is in large quantities, if adopt conventional installation method, the installation degree of difficulty is big, the hoist and mount number of times is many, the safety risk is big, the efficiency of construction is low, the construction cycle is long.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the large-size dust removal ventilation shaft is conveniently hoisted. In order to solve the technical problems, the inventor obtains the technical scheme of the invention through practice and summary, and the invention discloses a modular installation method for a dust removal ventilation shaft in a steel-making environment, which comprises the following steps:
step one, dividing a ventilation vertical shaft into a lower section and an upper section;
the integral height of the ventilation shaft is A, the installation position is arranged on the feeding cross roof girder, the elevation of the feeding cross roof girder is h, the ventilation shaft is segmented at the elevation B to be convenient for assembly and hoisting, the ventilation shaft is divided into an upper section and a lower section, the height of the lower section is m, the height of the upper section is n, and then the ventilation shaft is integrally installed by using a tower crane, wherein A is m + n, and B is more than h and is greater than A;
step two, assembling the ground on site in sections;
a. assembling the lower section: the ventilation shaft comprises a first upright post, a first inter-post support and an upper frame;
dividing the lower section into 9 pieces, wherein each piece has a span of 6m, the first upright columns are provided with a plurality of groups and are distributed in a rectangular shape, a first inter-column support is connected between the adjacent first upright columns, every three pieces of the first inter-column support form a whole, and the first inter-column support is assembled on the ground; meanwhile, the verticality of the stand column and the diagonal line of the upper frame are well controlled, the connecting beam between the two pieces is installed, the whole lower section is hoisted after being assembled, the whole upper frame is reinforced before hoisting, and the hoisting safety is ensured;
b. assembling the upper section; dividing the upper section of the ventilation shaft into a lower frame and a clerestory positioned at the upper part at an elevation P, and respectively assembling the lower frame and the clerestory at the upper part, wherein the elevation P is greater than B, the height of the clerestory is greater than n, the deviation of the diagonal line of the lower frame needs to be controlled in a key way during assembly, and after the lower frame and the clerestory are assembled in groups, the lower frame and the clerestory are assembled into a whole on the ground for hoisting;
step three, modular hoisting;
hoisting the lower section of the ventilation shaft according to the selected hoisting parameters of the tower crane, and after the lower section of the ventilation shaft is firmly fixed, installing the upper section of the ventilation shaft; the lifting points are arranged at the height from the top surface 1/3 and are lifted by six points, namely four corners are main lifting points, the middle part is provided with an auxiliary lifting point, and the four corners are adjusted by pulling the fenugreek with hands; the lower part is reinforced by adopting a steel wire rope and an adjusting chain block, the diagonal size of the upper part is controlled, and the generation of deformation is controlled.
The invention further provides the following scheme in the step two: the lower frame of the ventilation shaft is firstly assembled into two pieces for convenient assembly, then the two pieces are erected respectively by a crane and fixed by safety ropes, meanwhile, the verticality of the stand column and the diagonal line of the frame are well controlled, then the connecting beam between the two pieces is installed, the whole lower section is hoisted after being assembled, the whole frame is reinforced before hoisting, and the hoisting safety is ensured.
In the invention, a scheme is further provided that in the second step, the lower frame diagonal error value is controlled within 10 mm.
In the invention, the scheme is further provided, in the step one, A is 32 meters, m is 12 meters, n is 20 meters, B is 52.38 meters, and h is 40.5 meters;
in step two, P is 67.38 meters.
The invention further provides a scheme that the model of the tower crane is DBQ 3000.
In the invention, a scheme is further provided, in the second step, the upper section comprises a second upright post and a second support between the posts, the upper section is provided with a clerestory with the height of more than 20m, the top end of the second support between the posts is installed in the clerestory, and the upper section of the ventilation shaft is divided into a frame and a clerestory at the elevation 67.38m and respectively paired.
Compared with the prior art, the invention has the beneficial effects that:
according to the invention, by the method of 'ground sectional assembly and modular hoisting', the integral dust removal ventilation shaft is firstly divided, and then the upper and lower sections are assembled and disassembled in groups to realize height limiting alignment, so that a stable installation effect is realized, the field ground sectional assembly and modular hoisting of the environmental dust removal ventilation shaft are realized, the construction safety is effectively ensured, the high-altitude operation is reduced, and the safety risk is reduced.
Drawings
In order to more clearly illustrate the embodiments or technical solutions in the prior art of the present invention, the drawings used in the description of the embodiments or prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.
Fig. 1 is a schematic elevation view of a dust extraction ventilation shaft;
FIG. 2 is a schematic view of the assembled elevation of the lower section of the dust removal ventilation shaft;
FIG. 3 is a schematic elevation view of the lower section of the dust-removing ventilating shaft;
fig. 4 is a schematic vertical view of the upper hoisting section of the dedusting ventilation shaft.
In the figure: 1. a ventilation shaft; 2. a lower section; 3. an upper section; 4. a roof girder; 5. DBQ3000 tower crane 6, clerestory; 7. a chain block; 8. a first upright post; 9. a first support is arranged between the columns; 10. a second upright post; 11. and a second support is arranged between the columns.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The application of the principles of the present invention will be further described with reference to the accompanying drawings and specific embodiments.
Examples
A modular installation method for a dust removal ventilation shaft in a steelmaking environment comprises the following steps:
step one, dividing a ventilation vertical shaft 1 into a lower section 2 and an upper section 3;
the integral height of the ventilation shaft 1 is A, the installation position is arranged on the feeding roof girder 4, the elevation of the feeding roof girder 4 is h, the ventilation shaft is segmented at the elevation B to be convenient for assembly and hoisting, the ventilation shaft is divided into an upper section 3 and a lower section 2, the height of the lower section 2 is m, the height of the upper section 3 is n, and then the ventilation shaft is integrally installed by using a tower crane 5, wherein A is m + n, and B is h > A;
step two, assembling the ground on site in sections;
a. assembling the lower section 2: the ventilation shaft 1 comprises a first upright post 8, a first inter-post support 9 and an upper frame;
dividing the lower section 2 into 9 pieces, wherein each piece has a span of 6m, the first upright posts 8 are provided with a plurality of groups and are distributed in a rectangular shape, the first inter-post supports 9 are connected between the adjacent first upright posts 8, every three pieces of the groups form a whole, and the first inter-post supports 9 are paired on the ground;
meanwhile, the verticality of the first upright post 8 and the diagonal line of the upper frame are well controlled, the connecting beam between the two upright posts is installed, the whole lower section 2 is hoisted after being assembled, the whole upper frame is reinforced before hoisting, and the hoisting safety is ensured;
b. assembling the upper section 3; the upper section 3 of the ventilation shaft 1 is divided into a lower frame and a clerestory 6 positioned at the upper part at an elevation P and are respectively paired, P is greater than B, the height of the clerestory 6 is greater than n, the deviation of the diagonal line of the lower frame is controlled in an important way during assembly, and after the lower frame and the clerestory 6 are assembled in groups at the lower part, the lower frame and the clerestory 6 are assembled into a whole on the ground for hoisting;
step three, modular hoisting;
according to the hoisting parameters selected by the tower crane 5, hoisting the lower section 2 of the ventilation shaft 1, fixing firmly, and then installing the upper section 3 of the ventilation shaft 1; the lifting points are arranged at the height from the top surface 1/3 and are lifted by six points, namely four corners are main lifting points, the middle part is provided with an auxiliary lifting point, and the four lifting points are adjusted by pulling the fenugreek 7 by hand; the lower part is reinforced by adopting a steel wire rope and an adjusting chain block, the diagonal size of the upper part is controlled, and the generation of deformation is controlled.
The invention further provides the following scheme in the step two: the lower frame of the ventilation shaft 1 is firstly assembled into two pieces for convenient assembly, then the two pieces are erected respectively by a crane and fixed by a safety rope, meanwhile, the verticality of the stand column and the diagonal line of the frame are well controlled, then the connecting beam between the two pieces is installed, the whole lower section 2 is hoisted after being assembled, the whole frame is reinforced before hoisting, and the hoisting safety is ensured.
In the invention, a scheme is further provided that in the second step, the lower frame diagonal error value is controlled within 10 mm.
In the invention, the scheme is further provided, in the step one, A is 32 meters, m is 12 meters, n is 20 meters, B is 52.38 meters, and h is 40.5 meters;
in step two, P is 67.38 meters.
According to the invention, the model of the tower crane 5 is DBQ 3000.
In the invention, a scheme is further provided, in the second step, the upper section 3 comprises a second upright post 10 and a second inter-post support 11, the upper section 3 is provided with a clerestory 6, the height of the clerestory 6 is more than 20m, the top end of the second inter-post support 11 is installed in the clerestory 6, and the upper section 3 of the ventilation shaft is divided into a frame and the clerestory 6 which are respectively paired at the elevation 67.38 m.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (6)
1. A modular installation method for a dust removal ventilation shaft in a steelmaking environment is characterized by comprising the following steps:
step one, dividing a ventilation vertical shaft (1) into a lower section (2) and an upper section (3);
the integral height of the ventilation shaft (1) is A, the installation position is arranged on the feeding roof girder (4), the elevation of the feeding roof girder (4) is h, in order to facilitate assembly and hoisting, segmentation is carried out at the elevation B, the ventilation shaft is divided into an upper section (3) and a lower section (2), the height of the lower section (2) is m, the height of the upper section (3) is n, and then integral installation is carried out on the whole body by using a tower crane (5), wherein A is m + n, and B is h > A;
step two, assembling the ground on site in sections;
a. assembling the lower section (2): the ventilation shaft (1) comprises a first upright post (8), a first inter-post support (9) and an upper frame;
the lower section (2) is divided into 9 pieces, each piece has a span of 6m, a plurality of groups of the first upright posts (8) are arranged and distributed in a rectangular shape, a first intercolumnar support (9) is connected between the adjacent first upright posts (8), every three pieces of the first intercolumnar support form a whole, and the first intercolumnar support (9) is paired on the ground;
meanwhile, the verticality of the first upright post (8) and the diagonal line of the upper frame are well controlled, then the connecting beam between the two pieces is installed, the whole lower section (2) is hoisted after being assembled, and the whole upper frame is reinforced before hoisting, so that the hoisting safety is ensured;
b. assembling the upper section (3); the upper section (3) of the ventilation shaft (1) is divided into a lower frame and a clerestory (6) positioned at the upper part at the elevation P and are respectively assembled in pairs, P is greater than B, the height of the clerestory (6) is greater than n, the deviation of the diagonal line of the lower frame is controlled in a key way during assembly, and after the lower frame and the clerestory (6) are assembled in groups at the lower part, the lower frame and the clerestory (6) are assembled into a whole on the ground for hoisting;
step three, modular hoisting;
according to the hoisting parameters selected by the tower crane (5), hoisting the lower section (2) of the ventilation shaft (1), fixing firmly, and then installing the upper section (3) of the ventilation shaft (1); the lifting points are arranged at the height from the top surface 1/3 and are lifted by six points, namely four corners are main lifting points, the middle part is provided with an auxiliary lifting point, and the four lifting points are adjusted by pulling the fenugreek (7) by hand; the lower part is reinforced by adopting a steel wire rope and an adjusting chain block, the diagonal size of the upper part is controlled, and the generation of deformation is controlled.
2. The modular installation method of a dust extraction ventilation shaft for a steelmaking environment as claimed in claim 1, wherein:
in the second step: the lower frame of the ventilation shaft (1) is firstly assembled into two pieces for convenient assembly, then the two pieces are erected by a crane respectively and fixed by safety ropes, meanwhile, the verticality of the stand column and the diagonal line of the frame are well controlled, then the connecting beam between the two pieces is installed, the whole lower section (2) is hoisted after being assembled, the whole frame is reinforced before hoisting, and the hoisting safety is ensured.
3. The modular installation method of a dust extraction ventilation shaft for a steelmaking environment as claimed in claim 1, wherein: in the second step, the lower frame diagonal error value is controlled within 10 mm.
4. The modular installation method of a dust extraction ventilation shaft for a steelmaking environment as claimed in claim 1, wherein:
in step one, A is 32 meters, m is 12 meters, n is 20 meters, B is 52.38 meters, and h is 40.5 meters;
in step two, P is 67.38 meters.
5. The modular installation method of a dust extraction ventilation shaft for a steelmaking environment as claimed in claim 1, wherein: the model of the tower crane (5) is DBQ 3000.
6. The modular installation method for a dust-removal ventilation shaft in a steelmaking environment as claimed in claim 4, wherein: in the second step, the upper section (3) comprises a second upright post (10) and a second inter-post support (11), a clerestory (6) is arranged on the upper section (3) and the height of the clerestory (6) is more than 20m, the top end of the second inter-post support (11) is installed in the clerestory (6), and the upper section (3) of the ventilation shaft is divided into a frame and the clerestory (6) which are respectively paired at the elevation position of 67.38 m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210562841.6A CN114961291A (en) | 2022-05-23 | 2022-05-23 | Modularized installation method for dust removal ventilation shaft in steelmaking environment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210562841.6A CN114961291A (en) | 2022-05-23 | 2022-05-23 | Modularized installation method for dust removal ventilation shaft in steelmaking environment |
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| CN114961291A true CN114961291A (en) | 2022-08-30 |
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| CN202210562841.6A Pending CN114961291A (en) | 2022-05-23 | 2022-05-23 | Modularized installation method for dust removal ventilation shaft in steelmaking environment |
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Citations (7)
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|---|---|---|---|---|
| US20100235206A1 (en) * | 2008-11-14 | 2010-09-16 | Project Frog, Inc. | Methods and Systems for Modular Buildings |
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| CN110984637A (en) * | 2019-12-09 | 2020-04-10 | 中国十七冶集团有限公司 | Steel structure modular installation method for steelmaking oxygen lance valve station |
| CN113585828A (en) * | 2020-04-30 | 2021-11-02 | 上海二十冶建设有限公司 | Installation method of large-span inverted triangular pipe truss slope roof workshop |
-
2022
- 2022-05-23 CN CN202210562841.6A patent/CN114961291A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US20100235206A1 (en) * | 2008-11-14 | 2010-09-16 | Project Frog, Inc. | Methods and Systems for Modular Buildings |
| US20150300035A1 (en) * | 2013-07-29 | 2015-10-22 | Steven P. Morta | Modular security system for above-ground structures |
| CN104912339A (en) * | 2015-04-22 | 2015-09-16 | 中国十七冶集团有限公司 | Long-distance multi-span welding H-section steel roof beam installation method |
| CN106351454A (en) * | 2016-08-29 | 2017-01-25 | 中国十七冶集团有限公司 | Method for combined installation of steel structure roof with steel plant |
| CN108661301A (en) * | 2018-06-22 | 2018-10-16 | 中煤第五建设有限公司 | Derrick stand modularization assembling platform and application method |
| CN110984637A (en) * | 2019-12-09 | 2020-04-10 | 中国十七冶集团有限公司 | Steel structure modular installation method for steelmaking oxygen lance valve station |
| CN113585828A (en) * | 2020-04-30 | 2021-11-02 | 上海二十冶建设有限公司 | Installation method of large-span inverted triangular pipe truss slope roof workshop |
Non-Patent Citations (1)
| Title |
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