CN110984384A - Installation method of lower frame column system of steel-making tower - Google Patents
Installation method of lower frame column system of steel-making tower Download PDFInfo
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- 238000000034 method Methods 0.000 title claims abstract description 47
- 238000009434 installation Methods 0.000 title claims abstract description 30
- 238000009628 steelmaking Methods 0.000 title claims abstract description 24
- 238000010276 construction Methods 0.000 claims abstract description 31
- 239000004567 concrete Substances 0.000 claims abstract description 30
- 239000011150 reinforced concrete Substances 0.000 claims abstract description 28
- 238000004519 manufacturing process Methods 0.000 claims abstract description 12
- 238000002360 preparation method Methods 0.000 claims abstract description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 25
- 239000010959 steel Substances 0.000 claims description 25
- 238000003466 welding Methods 0.000 claims description 10
- 230000003014 reinforcing effect Effects 0.000 claims description 7
- 238000009415 formwork Methods 0.000 claims description 6
- 230000002787 reinforcement Effects 0.000 claims description 5
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 3
- 238000000354 decomposition reaction Methods 0.000 claims description 3
- 210000001503 joint Anatomy 0.000 claims description 3
- 238000013102 re-test Methods 0.000 claims description 3
- 230000008016 vaporization Effects 0.000 claims description 3
- 238000007689 inspection Methods 0.000 claims description 2
- 238000009834 vaporization Methods 0.000 claims 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/30—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts being composed of two or more materials; Composite steel and concrete constructions
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- 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
- E04H5/00—Buildings or groups of buildings for industrial or agricultural purposes
- E04H5/02—Buildings or groups of buildings for industrial purposes, e.g. for power-plants or factories
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Abstract
The invention discloses a method for installing a frame column system at the lower part of a steel-making tower, and belongs to the technical field of industrial building installation. The method comprises the following steps: s1, construction preparation; s2, manufacturing the lower frame column in a segmented mode; s3, mounting a lower frame section column; s4, constructing a section of concrete of the lower frame column; s5, mounting a second section of lower frame column; s6, mounting a lower frame beam: and installing each layer of frame beam of the lower frame to ensure the stability of the lower frame column. The invention provides a brand-new solution for the frame column at the lower part of the steelmaking tower with light heavy feet, super-long and huge structure and complex reinforced concrete structure by a construction method of 'manufacturing by sections and implementing by steps', and realizes the quick, high-quality, safe and efficient installation of the frame column system at the lower part of the steelmaking tower.
Description
Technical Field
The invention relates to the technical field of industrial building installation, in particular to an installation method of a frame column system at the lower part of a steel-making tower.
Background
At present, high-rise buildings with all-steel structures are more domestic, and are mainly and intensively applied to convention centers, large theaters, gymnasiums and individual business buildings. The high-rise steel structure constructed by the metallurgical system is mainly concentrated in steel making and iron making areas, and the height is between 60m and 110 m. The steel-making system steel structure platform is characterized in that the multiple layers of the steel structure platform have large height difference, heavy equipment is intensively arranged, and the comprehensive progress of steel-making system steel structure installation directly influences the overall installation efficiency of a project.
In the steelmaking system, due to the existence of a converter concrete main operation platform, the structural form of a frame column at the lower part of a steelmaking tower is complex, the frame column at the lower part is a fine cross column below the main operation platform, rectangular reinforced concrete is surrounded around the cross column, and a reinforced concrete structure meeting the strength requirement is formed; and an ultra-long giant box type structure is arranged above the main operating platform, so that a steel column system with heavy weight and light feet is formed, and the installation is very inconvenient. Taking a lower frame of a tower matched with a common steel-making 210t converter as an example: the length is 30-40 m, the elevation of the column bottom is-2.0 m, the lower part is a cross column which is 400mm multiplied by 400mm and is 9.9m long, and the weight is 7-8 t; the upper portion is a rectangular box-shaped column which is 1000mm multiplied by 1200mm and 20-30 m long, the weight is 23-32 t, the total weight of the steel column is 25-56 t, a frame column which is light in weight, super-long, huge and of a steel-concrete complex structure is formed, the hoisting difficulty is high, the hoisting process is easy to deform, the installation precision requirement is high, installation is difficult to achieve, and the quality is difficult to guarantee.
Disclosure of Invention
1. Problems to be solved
Aiming at the defects and shortcomings in the prior art, the invention provides the method for installing the lower frame column system of the steelmaking tower, which effectively solves the problems of high hoisting difficulty, easy deformation, difficult alignment and the like when the lower frame column with a light top and heavy feet, ultra-long and giant steel-concrete complex structure in the steelmaking tower is installed, and realizes the quick, high-quality, safe and efficient installation of the lower frame column system of the steelmaking tower.
2. Technical scheme
In order to achieve the purpose, the technical scheme provided by the invention is as follows:
a method for installing a frame column system at the lower part of a steel-making tower comprises the following steps:
s1, construction preparation:
(1) the tower foundation is constructed and qualified after inspection and acceptance;
(2) the elevation reference point and the central mark plate are measured;
(3) the large crawler crane meeting the requirements of steel structures and equipment installation in the tower has service conditions;
(4) the condition that the construction of the walking foundation of the crawler crane is finished is met;
s2, manufacturing the lower frame column in a segmented mode:
because the frame column at the lower part of the tower is a complex structure with light weight, super-long and huge shape and steel reinforced concrete, the length is as high as 30-40 m, and the weight is 25-56 t; if the lower frame column of the tower is directly hoisted, the column is heavy and the foot is light, and the super-long giant structure cannot be aligned and fixed, so that the next step of installing a section of column reinforced concrete and each layer of platform of the lower frame cannot be carried out; the method of 'sectional manufacturing and step-by-step implementation' is skillfully introduced, the lower frame column is segmented about 1.2m above the elevation of the main operating platform, and the lower frame is manufactured by a first-section column and a second-section column;
s3, mounting a lower frame section column:
(1) hoisting a lower frame section column, in order to prevent the lower frame section column of a long and thin structure from deforming in the hoisting process, using a large crawler crane as a main hoisting point to hoist the upper part of the lower frame section column, using a 25t truck crane as an auxiliary hoisting point to hoist the lower part of the lower frame section column, and mutually matching the main hoisting point and the auxiliary hoisting point to ensure that the lower frame section column does not deform in the hoisting process; after the hoisting is in place, the center, the elevation and the verticality of a section of column are ensured to meet the requirements, 8 hoists are ensured to be in a stressed state by adjusting 1t hoists arranged on cable wind steel wire ropes in eight directions of 0 degrees, 45 degrees, 90 degrees, 135 degrees, 180 degrees, 225 degrees, 270 degrees and 315 degrees on the upper part of a section of column of a lower frame before adjustment, the section of column of the lower frame is ensured to be in a vertical state, the section of column of the lower frame is mutually controlled from 8 directions to ensure that the section of column of the lower frame is not toppled over, and then the main hoisting point is unloaded;
(2) the method comprises the following steps of accurately aligning a section of a lower frame column, accurately aligning the center, the elevation and the verticality of the section of the column by using a precise level gauge and a theodolite and adjusting the stress state of 8 cable wind ropes by using a jack, firmly welding a plurality of groups of adjusting gasket groups arranged below a section of column foot, ensuring that the 8 cable wind ropes are in a slightly tightened state, and ensuring that the aligned section of the lower frame column does not deviate under normal external force;
(3) the method is used for completing the installation of a section of column of the adjacent lower frame;
(4) the aligned two adjacent section columns are firmly fixed by using a temporary reinforcing beam made of 20# I-steel;
s4, constructing the concrete of the lower frame column by one section:
installing reinforcing steel bars, templates and the like on the periphery of the installed lower frame column section according to a drawing, retesting the center of the column section before concrete pouring, and pouring concrete on the column section under a qualified condition; rechecking the center of the column at any time in the process of pouring concrete around the column; in the two rechecking processes, if the center is deviated, the center of one section of column is ensured to meet the standard requirement by adjusting 8 cable wind ropes again; when the strength of the reinforced concrete of the lower frame section column reaches 60%, 8 cable wind ropes and temporary reinforcing beams can be removed;
s5, mounting a second section column of the lower frame column:
after the reinforced concrete of the first section of the lower frame reaches the strength, a large crawler crane can be used for installing the second section of the lower frame, and the butt joint seams of the first section of the lower frame and the second section of the lower frame are welded;
s6, mounting a lower frame beam:
and installing each layer of frame beam of the lower frame to ensure the stability of the lower frame column.
Preferably, the large crawler crane used in step S1 is generally selected comprehensively according to the lifting height and weight of the heaviest steam drum, the vaporizing flue, the steel structure at the top of the tower, and the working conditions, and is based on practical economy.
Preferably, the construction method of "manufacturing in sections and performing step by step" in step S2 is specifically: the lower frame column is manufactured into a first-section column and a second-section column in a subsection mode 1.2m above a main operation platform, the first-section column installation is completed in the first step, the first-section column reinforced concrete construction is completed in the second step, the second-section column installation is completed in the third step, and the installation of the complex lower frame column with the top-heavy-foot light, ultra-long giant and reinforced concrete structure is completed in a skillful decomposition and step-by-step construction mode.
Preferably, when the center of a column is adjusted by using 8 guy cables in step S3, only the guy cables of each pair can be adjusted at one time, each pair is in an opposite direction, and two guy cables of a pair need to be unloaded and loaded at the same time, so as to ensure that the column does not topple during the adjustment process.
Preferably, in step S3, after the alignment of a section of column is completed, the welding of multiple sets of adjustment gasket sets is completed immediately, because the elevation of the cross-column steel bar formwork cannot be adjusted in the later construction, the welding of the multiple sets of adjustment gasket sets is firm in the way that the welding of the base plates, the upper base plate and the cross-column base is firm.
Preferably, in step S4, two retests are necessary for the reinforcement of a column, formwork construction, and concrete pouring, otherwise the center of a column cannot be readjusted after the reinforced concrete reaches a certain strength.
Preferably, in step S4, the pouring elevation of the reinforced concrete of the lower frame section column is controlled to be 400-500 mm below the bottom elevation of the concrete frame beam of the concrete main operation platform between the sections of columns, and a sufficient construction space is reserved for the later construction of the concrete main operation platform.
3. Advantageous effects
Compared with the prior art, the invention has the beneficial effects that:
the invention provides a brand-new solution for a frame column at the lower part of a steelmaking tower with light heavy feet, ultra-long giant and complex steel-concrete structure by a construction method of 'sectional manufacturing and step-by-step implementation', and realizes the quick, high-quality, safe and efficient installation of the frame column system at the lower part of the steelmaking tower.
Drawings
FIG. 1 is a schematic view of a frame column system at the lower portion of a steelmaking turret;
FIG. 2 is a schematic view of a lower frame segment column;
FIG. 3 is a schematic view of a lower frame section column reinforcement;
fig. 4 is a schematic view of hoisting a lower frame two-section column.
In the figure: 1. a lower frame column; 1-1, a lower frame section column; 1-2, a lower frame two-section column; 2. a tower foundation; 3. a large crawler crane; 4. the crawler crane walks on the roadbed; 5. a section of column reinforced concrete; 6. a main operating platform; 7. a truck crane; 8. a guy rope; 9. a gourd; 10-1, a section of column adjacent to the lower frame; 11. temporarily reinforcing the beam; 12. a frame beam.
Detailed Description
The invention will be further described with reference to specific embodiments and the accompanying drawings in which:
example 1
The installation method of the frame column system at the lower part of the steelmaking tower comprises the following steps:
s1, construction preparation:
(1) the tower foundation 2 is constructed and accepted;
(2) the elevation reference point and the central mark plate are measured;
(3) the large crawler crane 3 meeting the requirements of steel structures and equipment installation in the tower has service conditions;
(4) the construction of the walking roadbed 4 of the crawler crane is completed;
s2, manufacturing the lower frame column in a segmented mode:
because the frame column 1 at the lower part of the tower is a complex structure with light weight, super-long and huge size and steel reinforced concrete, the length is as high as 30-40 m, and the weight is 25-56 t; if the tower building lower frame column 1 is directly hoisted, the column is heavy, the foot is light, the super-long giant structure cannot be aligned and fixed, and the next step of installing a section of column reinforced concrete 5 and each layer of platform of the lower frame cannot be carried out; the method of 'sectional manufacturing and step-by-step implementation' is skillfully introduced, the lower frame column 1 is segmented about 1.2m above the elevation of the main operating platform 6, and the lower frame is manufactured by a first section column 1-1 and a second section column 1-2;
s3, mounting a lower frame section column:
(1) hoisting a lower frame section 1-1, in order to prevent the lower frame section 1-1 with a slender structure from deforming in the hoisting process, hoisting the upper part of the lower frame section 1-1 by using a large crawler crane 3 as a main hoisting point and hoisting the lower part of the lower frame section 1-1 by using a 25t truck crane 7 as an auxiliary hoisting point, wherein the main hoisting point and the auxiliary hoisting point are matched with each other to ensure that the lower frame section 1-1 does not deform in the hoisting process; after the hoisting is in place, the center, the elevation and the verticality of one section of the column 1-1 are ensured to meet the requirements, the 8 hoists 9 are ensured to be in a stressed state by adjusting the 1t hoists 9 arranged on the cable wind steel wire rope 8 in the eight directions of 0 degrees, 45 degrees, 90 degrees, 135 degrees, 180 degrees, 225 degrees, 270 degrees and 315 degrees on the upper part of the lower frame section of the column 1-1, the lower frame section of the column 1-1 is ensured to be in a vertical state, the lower frame section of the column 1-1 is mutually controlled from 8 directions to ensure that the column 1-1 is not toppled over, and then the main hoisting point is unloaded;
(2) a section 1-1 of the lower frame column is accurately aligned, a jack is used for adjusting the stress state of 8 cable wind ropes 8 by using a precise level gauge and a theodolite, the center, the elevation and the verticality of the section of column are accurately aligned, a plurality of groups of adjusting gasket sets arranged below the section 1-1 of column foot are firmly welded, the 8 cable wind ropes 8 are ensured to be slightly tightened, and the section 1-1 of the lower frame column aligned under normal external force is ensured not to deviate;
(3) the installation of a section of column 10-1 of the adjacent lower frame is completed by the method;
(4) the temporary reinforcing beam 11 made of 20# I-steel is used for fixing the aligned two adjacent section columns firmly;
s4, constructing the concrete of the lower frame column by one section:
installing reinforcing steel bars, templates and the like on the periphery of the installed lower frame section column 1-1 according to a drawing, retesting the center of the section column 1-1 before concrete pouring, and pouring the concrete into the section column 1-1 under the qualified condition; rechecking the center of the column at any time in the process of pouring concrete around the column; in the two rechecking processes, if the center is deviated, the center of one section of column 1-1 is ensured to meet the standard requirement by adjusting 8 cable wind ropes 8 again; when the strength of the lower frame section of column reinforced concrete 5 reaches 60%, 8 cable wind ropes 8 and the temporary reinforcing beam 11 can be dismantled;
s5, mounting a second section column of the lower frame column:
after the one-section column reinforced concrete 5 of the lower frame reaches the strength, a large crawler crane 3 can be used for installing the two-section column 1-2 of the lower frame, and the butt joint seam of the one-section column 1-1 and the two-section column 1-2 is welded;
s6, mounting a lower frame beam:
to ensure the stability of the lower frame column 1, the frame beams 12 of the lower frame are installed at each level.
Preferably, the large crawler crane 3 used in step S1 is generally selected comprehensively according to the lifting height and weight of the heaviest steam drum, the vaporizing flue, the steel structure at the top of the tower, and the working conditions, and is based on practical economy.
Preferably, the construction method of "manufacturing in sections and performing step by step" in step S2 is specifically: the lower frame column 1 is manufactured into a first section column 1-1 and a second section column 1-2 in sections 1.2m above a main operation platform, the first section column 1-1 installation is completed in the first step, the first section column reinforced concrete 5 construction is completed in the second step, the second section column 1-2 installation is completed in the third step, and the installation of the complex lower frame column 1 with the top heavy, super-long and giant steel-concrete structure is completed in a skillful decomposition and step-by-step construction mode.
Preferably, when the center of the column 1-1 is adjusted by using 8 guy wires 8 in step S3, only 1-2 pairs of guy wires 8 can be adjusted at one time, each pair is in opposite directions (e.g., one pair is 0 ° and 180 °, and one pair is 90 ° and 270 °), and two guy wires 8 of one pair need to be unloaded and loaded at the same time, so as to ensure that the column 1-1 does not topple during the adjustment process.
Preferably, after the alignment of the section of column 1-1 is completed in step S3, the welding of the multiple sets of adjustment gasket sets is immediately completed, because the elevation of the cross-column steel bar formwork cannot be adjusted in the later construction, and the welding of the multiple sets of adjustment gasket sets is firm in the way that the welding between the backing plates and between the upper backing plate and the cross-column base is firm.
Preferably, in step S4, two retests are necessary for the reinforcement of the column, the formwork construction, and the concrete pouring, otherwise the center of the column 1-1 cannot be readjusted after the reinforced concrete 5 reaches a certain strength.
Preferably, in step S4, the pouring elevation of the reinforced concrete 5 of the lower frame column is controlled to be 400-500 mm below the elevation of the bottom of the concrete frame beam of the concrete main operation platform 6 between the columns 1-1, so as to reserve enough construction space for the later construction of the concrete main operation platform 6.
The invention provides a brand-new solution for the frame column at the lower part of the steelmaking tower with light heavy feet, super-long and huge structure and complex reinforced concrete structure by a construction method of 'manufacturing by sections and implementing by steps', and realizes the quick, high-quality, safe and efficient installation of the frame column system at the lower part of the steelmaking tower.
The present invention and its embodiments have been described above schematically, without limitation, and what is shown in the drawings is only one of the embodiments of the present invention, to which the actual method is not limited. Therefore, if the person skilled in the art receives the teaching, without departing from the spirit of the invention, the person skilled in the art shall not inventively design the similar structural modes and embodiments to the technical solution, but shall fall within the scope of the invention.
Claims (7)
1. A method for installing a frame column system at the lower part of a steel-making tower is characterized by comprising the following steps: the method comprises the following steps:
s1, construction preparation:
(1) the tower foundation is constructed and qualified after inspection and acceptance;
(2) the elevation reference point and the central mark plate are measured;
(3) the large crawler crane meeting the requirements of steel structures and equipment installation in the tower has service conditions;
(4) the condition that the construction of the walking foundation of the crawler crane is finished is met;
s2, manufacturing the lower frame column in a segmented mode:
because the frame column at the lower part of the tower is a complex structure with light weight, super-long and huge shape and steel reinforced concrete, the length is as high as 30-40 m, and the weight is 25-56 t; if the lower frame column of the tower is directly hoisted, the column is heavy and the foot is light, and the super-long giant structure cannot be aligned and fixed, so that the next step of installing a section of column reinforced concrete and each layer of platform of the lower frame cannot be carried out; the method of 'sectional manufacturing and step-by-step implementation' is skillfully introduced, the lower frame column is segmented about 1.2m above the elevation of the main operating platform, and the lower frame is manufactured by a first-section column and a second-section column;
s3, mounting a lower frame section column:
(1) hoisting a lower frame section column, in order to prevent the lower frame section column of a long and thin structure from deforming in the hoisting process, using a large crawler crane as a main hoisting point to hoist the upper part of the lower frame section column, using a 25t truck crane as an auxiliary hoisting point to hoist the lower part of the lower frame section column, and mutually matching the main hoisting point and the auxiliary hoisting point to ensure that the lower frame section column does not deform in the hoisting process; after the hoisting is in place, the center, the elevation and the verticality of a section of column are ensured to meet the requirements, 8 hoists are ensured to be in a stressed state by adjusting 1t hoists arranged on cable wind steel wire ropes in eight directions of 0 degrees, 45 degrees, 90 degrees, 135 degrees, 180 degrees, 225 degrees, 270 degrees and 315 degrees on the upper part of a section of column of a lower frame before adjustment, the section of column of the lower frame is ensured to be in a vertical state, the section of column of the lower frame is mutually controlled from 8 directions to ensure that the section of column of the lower frame is not toppled over, and then the main hoisting point is unloaded;
(2) the method comprises the following steps of accurately aligning a section of a lower frame column, accurately aligning the center, the elevation and the verticality of the section of the column by using a precise level gauge and a theodolite and adjusting the stress state of 8 cable wind ropes by using a jack, firmly welding a plurality of groups of adjusting gasket groups arranged below a section of column foot, ensuring that the 8 cable wind ropes are in a slightly tightened state, and ensuring that the aligned section of the lower frame column does not deviate under normal external force;
(3) the method is used for completing the installation of a section of column of the adjacent lower frame;
(4) the aligned two adjacent section columns are firmly fixed by using a temporary reinforcing beam made of 20# I-steel;
s4, constructing the concrete of the lower frame column by one section:
installing reinforcing steel bars, templates and the like on the periphery of the installed lower frame column section according to a drawing, retesting the center of the column section before concrete pouring, and pouring concrete on the column section under a qualified condition; rechecking the center of the column at any time in the process of pouring concrete around the column; in the two rechecking processes, if the center is deviated, the center of one section of column is ensured to meet the standard requirement by adjusting 8 cable wind ropes again; when the strength of the reinforced concrete of the lower frame section column reaches 60%, 8 cable wind ropes and temporary reinforcing beams can be removed;
s5, mounting a second section column of the lower frame column:
after the reinforced concrete of the first section of the lower frame reaches the strength, a large crawler crane can be used for installing the second section of the lower frame, and the butt joint seams of the first section of the lower frame and the second section of the lower frame are welded;
s6, mounting a lower frame beam:
and installing each layer of frame beam of the lower frame to ensure the stability of the lower frame column.
2. The method of claim 1, wherein the method further comprises: the large crawler crane used in step S1 is generally selected comprehensively according to the lifting height and weight of the heaviest steam drum, the vaporization flue, the steel structure at the top of the tower, and the working conditions in the steelmaking system, and is based on the practical economy.
3. The method of claim 1, wherein the method further comprises: the construction method of "segment making, step implementation" described in step S2 specifically includes: the lower frame column is manufactured into a first-section column and a second-section column in a subsection mode 1.2m above a main operation platform, the first-section column installation is completed in the first step, the first-section column reinforced concrete construction is completed in the second step, the second-section column installation is completed in the third step, and the installation of the complex lower frame column with the top-heavy-foot light, ultra-long giant and reinforced concrete structure is completed in a skillful decomposition and step-by-step construction mode.
4. The method of claim 1, wherein the method further comprises: when the center of a column is adjusted by using 8 guy wires in step S3, only the guy wires of each pair can be adjusted at the same time, each pair is in the opposite direction, and two guy wires of a pair need to be unloaded and loaded at the same time, so as to ensure that the column does not topple during the adjustment process.
5. The method of claim 1, wherein the method further comprises: in step S3, after the alignment of a section of column is completed, the welding of multiple sets of adjustment shim packs is completed immediately, because the elevation of the cross-column steel reinforcement formwork cannot be adjusted any more in the later construction, and the welding of the multiple sets of adjustment shim packs is firm in the way that the shim plates and the upper-layer shim plate and the cross-column base are welded firmly.
6. The method of claim 1, wherein the method further comprises: in step S4, two retests are necessary for the reinforcement of a column, the formwork construction, and the concrete pouring, otherwise the center of a column cannot be readjusted after the reinforced concrete reaches a certain strength.
7. The method of claim 1, wherein the method further comprises: in step S4, the pouring elevation of the reinforced concrete of the lower frame section column is controlled to be 400-500 mm below the elevation of the bottom of the concrete frame beam of the concrete main operation platform between the sections of columns, and a sufficient construction space is reserved for the later construction of the concrete main operation platform.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115288458A (en) * | 2022-08-05 | 2022-11-04 | 同济大学 | A construction auxiliary method and device suitable for rapid conversion of indoor scenes |
| CN117145215A (en) * | 2023-08-23 | 2023-12-01 | 中铁建设集团南方工程有限公司 | A segmented assembly and construction method for giant flower-shaped special-shaped steel columns used in high-speed railway stations |
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