CN110847616B - Method for mounting large-volume steel frame flue - Google Patents
Method for mounting large-volume steel frame flue Download PDFInfo
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- CN110847616B CN110847616B CN201911183307.9A CN201911183307A CN110847616B CN 110847616 B CN110847616 B CN 110847616B CN 201911183307 A CN201911183307 A CN 201911183307A CN 110847616 B CN110847616 B CN 110847616B
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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
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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
- E04G21/162—Handles to carry construction blocks
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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
- E04G21/164—Tools or apparatus specially adapted for working-up chimneys
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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
- E04G21/165—Tools or apparatus specially adapted for in situ prefabricated building elements to be tilted up in position
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J11/00—Devices for conducting smoke or fumes, e.g. flues
- F23J11/12—Smoke conduit systems for factories or large buildings
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Conveying And Assembling Of Building Elements In Situ (AREA)
Abstract
The invention discloses a method for installing a large-volume steel frame flue, which comprises the following steps of: s1, firstly, a steel frame foundation is made, then, paying off is carried out on the steel frame foundation, the flue installation position is marked, and the wall plate, the bottom plate and the top plate are arranged at the flue installation position; s2 marking the steel frame upright post mounting position on the wall plate; s3, opening at the installation position of the steel frame upright post, and hanging the steel frame upright post into the opening; s4, arranging the steel frame body on the steel frame foundation; further comprising the steps of: s5, mounting a flip top; s6, lifting the inverted top to complete a lifting stroke of the inverted pull rod; s7, after the lifting stroke of the reverse pulling rod is completed, the reverse pulling roof is lifted again, and the installation of the whole large-section flue is completed from the step S5 repeatedly. The beneficial technical effects of the invention are as follows: the construction is safe, the construction period is short, the requirement on the site is low, and large-scale hoisting equipment is not required.
Description
Technical Field
The invention relates to the technical field of environmental protection equipment installation, in particular to a method for installing a large-volume steel frame flue.
Background
Along with the continuous improvement of the environmental protection standard, the smoke emission requirement is more and more strict, the original environmental protection equipment of a steel mill and a power plant cannot meet the latest emission standard regulated by the state, and the emission requirement can be met only by modifying and upgrading or adding new environmental protection equipment.
Because most of steel mill sintering machines in China have no or small planned environment-friendly equipment site at the beginning of building the plants, most of the construction site sites are narrow and difficult to construct under the basic condition that the environment-friendly equipment installed at the early stage can meet the design requirements at that time. And transformation and upgrading are carried out, and the construction site cannot meet the requirement of large hoisting equipment entering, so that great difficulty is brought to construction. Advanced construction technology or construction equipment is urgently needed in the industry to solve the problem of high-altitude installation of large-volume flues and denitration shells. The traditional construction process can not meet the construction requirements.
The traditional process comprises the following 3 methods:
1. large-scale hoisting equipment hoisting method
Large-scale equipment (such as desulfurizing tower) that falls to the ground adopts the full flip-chip method, uses the equipment of face-down to jack up the desulfurizing tower step by step in the layering, accomplishes the tower body installation back, demolishs face-down equipment again.
(1) The requirement on the type selection of large-scale hoisting equipment is high, and the construction requirement is reasonably selected according to the hoisting height, weight and span due to the large volumes of the flue and the shell. The larger the volume is, the higher the height is, the larger the type selection of the hoisting equipment is, and the construction cost is correspondingly increased.
(2) The site requirement is harsh, and the construction road must satisfy large-scale hoisting equipment can get into the scene. The site must satisfy the equipment of main equipment, hoist and mount, dismantlement requirement and the site requirement of corollary equipment, must satisfy the site requirement of flue, casing member prefabrication and transportation simultaneously, and it is great to occupy the place.
(3) The risk coefficient is high, and the high-altitude operation amount is large. The hoisting is affected by factors such as weather, weight, span, height and the like, and is affected by adverse factors such as personnel operation, cooperation and the like, so that safety risk exists.
2. Tower crane construction method
And (3) making a tower crane foundation at a proper position on site, installing the tower crane after the strength of the foundation meets the requirement, then installing a steel frame by using the tower crane, and hoisting the flue or the shell in a segmented or segmented manner after the steel frame is installed. And after the installation is finished, the tower crane is dismantled by using hoisting equipment.
(1) The site must satisfy the tower crane installation, dismantlement condition and tower crane foundation construction condition.
(2) As the tower crane needs to be subjected to foundation construction, the occupied construction period is long.
(3) The cost is high, and the investment of tower crane construction, lease, detection, foundation construction, installation, disassembly and the like is the highest compared with other processes.
(4) Security risk: due to the limitation of the hoisting capacity of the tower crane, the overhead working capacity is increased, and meanwhile, the high potential safety hazard exists due to the influence of adverse factors such as weather and manual operation.
3. The method for inversely installing the absorption tower comprises the following steps:
the small hoisting equipment is used for firstly installing the steel frame on the basis of the steel frame and prefabricating the flue or the shell at other positions on site, so that the construction task is completed by installing the flue or the shell in sections or in segments on the premise of ensuring that the large hoisting equipment can enter the site and meeting the hoisting height, span and weight.
(1) The flip-chip equipment can only lift upwards under, has strict requirement to lifting point intensity.
(2) The jacking can only be stepped up, and the installation material consumption is big when the installation of the flip top is more in the manual work, and the measure material uses more, and the cost is increased.
(3) The operation requirement is high, and construction must be strictly carried out according to the operation requirement during jacking. The requirement for personnel cooperation is higher, and along with the rising of jacking height, the jacking risk also increases thereupon.
In conclusion, the problem that large-size flues, casings and the like cannot be installed by large-size hoisting equipment due to the limitation of sites exists in the prior art.
Disclosure of Invention
The invention aims to provide a method for installing a large-volume steel frame flue, which solves the problem that large-volume flues, shells and the like cannot be installed by large-scale hoisting equipment due to site limitation in desulfurization and denitration construction of steel plants and power plants. On the premise of ensuring construction safety, the construction difficulty is perfectly solved by reasonably utilizing the combination of flip equipment and a steel frame reverse-pulling process; the requirement on the site is low, the flue can be pulled back as long as the flue and the steel frame can be installed, and large-scale hoisting equipment is not needed.
In order to achieve the purpose, the invention adopts the following technical scheme:
a method for installing a large-volume steel frame flue comprises the steps of installing a steel frame and installing the flue, wherein the steel frame comprises a steel frame body, a steel frame cross beam, a steel frame upright post and an inclined strut; the flue comprises wall plates, a bottom plate and a top plate;
the ground installation of steelframe with the flue includes the following step:
s1, firstly, a steel frame foundation is made, then, paying off is carried out on the steel frame foundation, the flue installation position is marked, and the wall plate, the bottom plate and the top plate are arranged at the flue installation position;
s2 marking the steel frame upright post mounting position on the wall plate;
s3, opening at the installation position of the steel frame upright post, and hanging the steel frame upright post into the opening;
s4, arranging the steel frame body on the steel frame foundation;
further comprising the steps of:
s5, mounting a flip top;
s6, lifting the inverted top to complete a lifting stroke of the inverted pull rod;
s7, after the lifting stroke of the reverse pulling rod is completed, the reverse pulling roof is lifted again, and the installation of the whole large-section flue is completed from the step S5 repeatedly.
Furthermore, a positioning roller is arranged between the opening and the steel frame upright post.
Further, step S5 specifically includes the following steps:
1) a bearing beam is arranged in the flue, and the bearing beam is a bearing truss;
2) welding an inverted top bearing support on the side face of a steel frame upright post wing plate, mounting an inverted top on the bearing support, welding an inverted pull stress seat on the bearing truss, and arranging an inverted pull rod on the inverted pull stress seat;
3) and arranging a hydraulic oil station in the flue, wherein the hydraulic oil station is connected with the inverted top.
Further, step 1) comprises:
and a bearing truss is arranged at a position close to the steel frame upright post and the bottom plate, and the bearing truss is connected with the wall plate.
Further, step S6 specifically includes the following steps:
1) simultaneously lifting the inverted top, measuring whether the lifting height of each inverted pull rod is on a plane after each inverted pull rod completes one lifting stroke ten centimeters, leveling if the lifting height of each inverted pull rod is different, and checking whether the bearing truss, the inverted top bearing support and the inverted pull stress base meet lifting requirements;
2) reinforcing the unqualified bearing truss, the inverted top bearing support and the inverted drawing stress base, and lifting the inverted top after ensuring the lifting safety;
3) after the stroke of the reversing and pulling rod is finished, temporary bearing points are welded on the steel frame upright post and below the bearing truss;
4) after the temporary bearing point is welded, loosening the inverted top;
5) and lifting the inverted top bearing support after the inverted top bearing support moves upwards, and then dismantling the temporary bearing point to complete the lifting stroke of the inverted pull rod.
Further, step S7 specifically includes the following steps:
1) when the lifting height of the reverse pulling rod is larger than the distance between the steel frame cross beam on each layer and the steel frame cross beam on the previous layer, the reverse jacking stops lifting;
2) two winches are installed in the flue, and the steel frame beam and the inclined strut are hoisted by the winches;
3) after the steel frame cross beam and the inclined strut are installed, arranging the inverted top on the installed steel frame upright;
4) finishing the installation of the next layer of steel frame cross beam from step S5;
5) and repeating the step S5 to finish the installation of the steel frame cross beam on each layer until the installation of the whole large-section flue is finished.
The beneficial technical effects of the invention are as follows:
1. firstly paying off on a steel frame base of a steel frame, marking a flue installation position, wherein the flue comprises a wall plate and a bottom plate, marking the steel frame upright post installation position on the flue wall plate, and then assembling the flue on the base to finish the manufacturing; the opening is arranged at the mounting position of the steel frame upright column, the steel frame upright column is hung into the opening, the opening is arranged at the upper wall plate and the lower wall plate of the flue at the mounting position of the steel frame upright column, the size of the opening is more than twenty centimeters of the cross section of the upright column, and the mounting and the welding of the upright column are facilitated. Hoisting the steel frame upright column into the flue opening by using a small crane, conforming to the original calibrated upright column installation position, correcting and welding to finally finish upright column installation; further comprising the steps of: mounting an inverted top; lifting the inverted jack to complete a lifting stroke of the inverted pulling rod; after the lifting stroke of one reverse-pulling rod is completed, the reverse-pulling roof is lifted, and the whole large-section flue is reversely mounted by using the reverse-pulling process.
2. And a positioning roller is arranged between the opening and the steel frame upright post, so that the verticality of the steel frame upright post during the back-pull is ensured, and the flue installation position is not deviated.
3. Because the cross section of the flue is large, the flue needs to be provided with a bearing beam in the flue in consideration of the safety of the reverse drawing, and profile steel can be used as a bearing truss with the bottom plate at a position close to the steel frame upright post and is connected with the two side wall plates and firmly welded. The lifting safety requirements of the whole flue, the accessory materials and the equipment can be borne by the reverse-pulling stress point.
4. In the lifting inverted roof, after the inverted pull rod completes one lifting stroke for ten centimeters, measuring whether the lifting height of the inverted pull rod of each inverted roof is on the same plane or not, if the difference is needed to be leveled, and checking whether the load-bearing truss, the inverted roof load-bearing support and the inverted pull stress seat meet the lifting requirement or not; reinforcing the unqualified bearing truss, the inverted top bearing support and the inverted drawing stress base, and lifting the inverted top after ensuring the lifting safety; after the stroke of the reversing and pulling rod is finished, temporary bearing points are welded on the steel frame upright post and below the bearing truss; after the temporary bearing point is welded, loosening the inverted top; and after the inverted top is loosened, the inverted top bearing support is moved upwards to lift the inverted top, and the temporary bearing point is detached to complete the lifting stroke of the inverted pull rod. The method provided by the invention has small site requirement, does not need to use large-scale hoisting equipment, does not occupy other sites as long as the flue can be assembled, solves the problem of site-free hoisting, and saves the links of equipment, assembly, disassembly, transportation, hoisting and the like. The construction period is shortened, and a large amount of construction cost is saved.
5. 1) when the lifting height of the reverse pulling rod is larger than the distance between the steel frame cross beam on each layer and the steel frame cross beam on the previous layer, the reverse jacking stops lifting, the lifting height of one time cannot exceed the distance height too much, and the safety is ensured;
2) two winches are installed in the flue, the steel frame cross beam and the inclined strut are hoisted by the winches, and the winches can guarantee the vertical lifting of the steel frame cross beam and the inclined strut;
3) after the steel frame cross beam and the inclined strut are installed, arranging the inverted top on the installed steel frame cross beam;
4) finishing the installation of the next layer of steel frame cross beam from step S5;
5) and repeating the step S5 to finish the installation of the steel frame cross beam on each layer until the installation of the whole large-section flue is finished.
The large-volume flue is assembled and manufactured on the ground, and the like, the flue is arranged on the upper part through the reverse-drawing process, high-altitude operation is changed into ground construction, labor cost is saved, and construction safety and quality are better guaranteed.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a flow chart of the ground assembly of a flue and a steel frame according to the present invention;
FIG. 2 is a flow chart of a reverse drawing process used in the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
A method for installing a large-volume steel frame flue comprises steel frame installation and flue installation, wherein a steel frame comprises a steel frame body, ten layers of steel frame cross beams (the distance between each layer of steel frame cross beam and the adjacent steel frame cross beam is 5 m), steel frame upright posts and inclined struts; the flue comprises wall plates, a bottom plate and a top plate;
as shown in fig. 1, the ground installation of the steel frame and the flue includes the following steps:
s1, firstly, a steel frame foundation is made, then, paying off is carried out on the steel frame foundation, the flue installation position is marked, and the wall plate, the bottom plate and the bottom plate are arranged at the flue installation position;
the manufacturing position of the flue is required to be consistent with the mounting position of the steel frame up and down;
s2 marking the steel frame upright post mounting position on the wall plate;
paying off of the mounting position of the steel frame upright post needs to be carefully corrected to meet the mounting requirement;
s3, opening at the installation position of the steel frame upright post, and hanging the steel frame upright post into the opening;
the opening is arranged at the mounting position of the steel frame upright column, the steel frame upright column is hung into the opening, the opening is arranged at the upper wall plate and the lower wall plate of the flue at the mounting position of the steel frame upright column, the size of the opening is more than twenty centimeters of the cross section of the upright column, and the mounting and the welding of the upright column are facilitated. The steel frame upright post is hung into the flue opening by a small crane, the steel frame upright post conforms to the originally calibrated upright post mounting position and is welded in a correction mode, the upright post mounting is finally completed, after the steel frame upright post is mounted, an upright post positioning roller must be mounted between the upright post opening and the upright post on the flue, the verticality of the upright post during the back-pulling process is ensured, and the flue mounting position is not deviated.
S4, arranging the steel frame body on the steel frame foundation;
as shown in fig. 2, the reverse drawing process of the method provided by this embodiment further includes the following steps:
s5 mounting the flip top, specifically comprising the following steps:
1) a bearing beam is arranged in the flue, and the bearing beam is a bearing truss;
the bearing beam is arranged in the flue, because the section of the flue is larger, the bearing beam is required to be arranged in the flue in consideration of the safety of the reverse drawing, profile steel can be used as a truss beam with a bottom plate at a position close to a steel frame upright post and is connected with two side wall plates and firmly welded, the lifting safety requirements of the whole flue, accessory materials and equipment can be met by the stress point of the reverse drawing, a bearing truss is arranged at a position close to the steel frame upright post and the bottom plate, and the bearing truss is connected with the flue wall plates;
2) welding inverted top bearing supports on the side faces of the steel frame upright post wing plates, mounting twelve inverted tops on the bearing supports, welding inverted-pull stress seats on the bearing trusses, and arranging inverted-pull rods on the inverted-pull stress seats;
if the cross section of the flue is large and the steel frame upright columns are relatively few, double inverted jacks can be added on two sides of the wing plate of the steel frame upright column to ensure jacking safety;
3) and arranging a hydraulic oil station in the flue, wherein the hydraulic oil station is connected with the inverted top.
S6 lifting the inverted top to finish the lifting stroke of the inverted pull rod, and the method specifically comprises the following steps:
1) lifting the twelve inverted jacks simultaneously, after each inverted lever completes one lifting stroke for ten centimeters, measuring whether the lifting heights of the inverted levers on the twelve inverted jacks are on the same plane or not by using a measuring tape (other measuring tools can be used), if so, leveling is needed, and checking whether the bearing truss, the inverted jack bearing support and the inverted jack stress base meet lifting requirements or not;
2) reinforcing the unqualified bearing truss, the inverted top bearing support and the inverted drawing stress base, and lifting the inverted top after ensuring the lifting safety;
3) after the stroke of the reversing and pulling rod is finished, temporary bearing points are welded on the steel frame upright post and below the bearing truss;
4) after the temporary bearing point is welded, loosening the inverted top;
5) and lifting the inverted top bearing support after the inverted top bearing support moves upwards, and then dismantling the temporary bearing point to complete the lifting stroke of the inverted pull rod.
S7, after the lifting stroke of the reverse-pulling rod is completed, the reverse-pulling roof is lifted, and the installation of the whole large-section flue is completed from the step S5, which specifically comprises the following steps:
1) when the lifting height of the reverse pulling rod is larger than the height between the first layer of steel frame beam and the ground, the reverse jacking stops lifting;
2) two winches are installed in the flue, and the first layer of steel frame cross beam and the inclined strut are hoisted by the winches;
3) after the first layer of steel frame cross beams and the inclined struts are installed, arranging the five inverted jacks on the steel frame upright columns;
4) finishing the installation of the steel frame cross beam on the second floor from the step S5;
5) and repeating the step S5 to finish the installation of the steel frame cross beam on each layer until the installation of the whole large-section flue is finished.
And (5) repeatedly completing the installation of the cross beams of the third and fourth layers … … and the tenth layer of steel frames from the step S5, and completing the installation of the whole large-section flue.
And after the lifting stroke of one reverse-pulling rod is completed, the reverse-pulling roof is lifted, the whole large-section flue is installed by the reverse-pulling process in such a reverse-pulling way, when the flue is pulled reversely, when the lifting height reaches 0.5 m above the first layer of steel frame cross beam, the flue is lifted to 0.5 m above the second layer of cross beam after the first layer of cross beam and the inclined strut are completely installed, the installation of the second layer of cross beam and the inclined strut is completed, the reverse-pulling process is repeated by analogy, the flue is not required to be installed by exceeding the height of the lower layer of cross beam once, and the safety is ensured.
The number of the inverted tops can be analyzed according to specific conditions, in order to ensure safety, the weight borne by each inverted top is ensured not to exceed 80% of the maximum bearing capacity of the inverted top, the number of the inverted tops is unrelated to the number of layers of steel frame cross beams and the distance between the steel frame cross beams, the number of the inverted tops is related to the weight of a flue and the number of steel frame columns, if one inverted top is installed on each steel frame column under the condition that the weight of the flue is heavy and cannot meet the requirement, in order to ensure safety, two inverted tops can be installed on each steel frame column, but one bearing beam is arranged on each of two sides of each steel frame column.
When the method provided by the invention is adopted, the flue installation elevation point needs to be marked in advance, and when the flue reaches the installation elevation, the lifting is stopped in time, so that the idea of over-lifting is avoided. After the installation is finished, smoothly dismantling the equipment to finish the installation; operators must strictly follow the operating rules, standardize the operation, and observe and check frequently. After each stroke is lifted, the balance degree of the flue must be checked, if any problem exists, the adjustment is carried out in time, and the safety and the installation quality are ensured.
The method provided by the invention has small site requirement, does not need large-scale hoisting equipment, does not occupy other sites as long as the flue can be assembled, and solves the problem of site-free hoisting; the links such as equipment, assembly, disassembly, transportation and hoisting of semi-finished products are saved; the reverse drawing process is adopted, so that the risk of hoisting large parts is avoided, and the construction is safe and efficient; because the large-volume flue is assembled and manufactured on the ground, high-altitude operation is changed into ground construction, the construction period is shortened, the labor cost is saved, and better guarantee is provided for the construction safety and quality.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (4)
1. A method for installing a large-volume steel frame flue comprises the steps of installing a steel frame and installing the flue, wherein the steel frame comprises a steel frame body, a steel frame cross beam, a steel frame upright post and an inclined strut; the flue comprises wall plates, a bottom plate and a top plate;
the ground installation of steelframe with the flue includes the following step:
s1, firstly, a steel frame foundation is made, then, paying off is carried out on the steel frame foundation, the flue installation position is marked, and the wall plate, the bottom plate and the top plate are arranged at the flue installation position;
s2 marking the steel frame upright post mounting position on the wall plate;
s3, opening at the installation position of the steel frame upright post, and hanging the steel frame upright post into the opening;
s4, arranging the steel frame body on the steel frame foundation;
the method is characterized by further comprising the following steps:
s5, mounting a flip top;
s6, lifting the inverted top to complete a lifting stroke of the inverted pull rod;
s7, after the lifting stroke of the reverse-pulling rod is completed, lifting the reverse top, and repeating the step S5 to complete the installation of the whole large-section flue;
step S5 specifically includes the following steps:
1) a bearing beam is arranged in the flue, and the bearing beam is a bearing truss;
2) welding an inverted top bearing support on the side face of a steel frame upright post wing plate, mounting an inverted top on the bearing support, welding an inverted pull stress seat on the bearing truss, and arranging an inverted pull rod on the inverted pull stress seat;
3) arranging a hydraulic oil station in the flue, wherein the hydraulic oil station is connected with the inverted top;
step S6 specifically includes the following steps:
1) simultaneously lifting the inverted top, measuring whether the lifting height of each inverted pull rod is on a plane after each inverted pull rod completes one lifting stroke ten centimeters, leveling if the lifting height of each inverted pull rod is different, and checking whether the bearing truss, the inverted top bearing support and the inverted pull stress base meet lifting requirements;
2) reinforcing the unqualified bearing truss, the inverted top bearing support and the inverted drawing stress base, and lifting the inverted top after ensuring the lifting safety;
3) after the stroke of the reversing and pulling rod is finished, temporary bearing points are welded on the steel frame upright post and below the bearing truss;
4) after the temporary bearing point is welded, loosening the inverted top;
5) and lifting the inverted top bearing support after the inverted top bearing support moves upwards, and then dismantling the temporary bearing point to complete the lifting stroke of the inverted pull rod.
2. The method of claim 1, wherein positioning rollers are mounted between the opening and the steel frame column.
3. The method for installing the large-volume steel frame flue according to claim 1, wherein the step 1) comprises the following steps:
and a bearing truss is arranged at a position close to the steel frame upright post and the bottom plate, and the bearing truss is connected with the wall plate.
4. The method for installing the flue of the large-volume steel frame as claimed in claim 1, wherein the step S7 specifically comprises the following steps:
1) when the lifting height of the reverse pulling rod is larger than the distance between the steel frame cross beam on each layer and the steel frame cross beam on the previous layer, the reverse jacking stops lifting;
2) two winches are installed in the flue, and the steel frame beam and the inclined strut are hoisted by the winches;
3) after the steel frame cross beam and the inclined strut are installed, arranging the inverted top on the installed steel frame upright;
4) finishing the installation of the next layer of steel frame cross beam from step S5;
5) and repeating the step S5 to finish the installation of the steel frame cross beam on each layer until the installation of the whole large-section flue is finished.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911183307.9A CN110847616B (en) | 2019-11-27 | 2019-11-27 | Method for mounting large-volume steel frame flue |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911183307.9A CN110847616B (en) | 2019-11-27 | 2019-11-27 | Method for mounting large-volume steel frame flue |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110847616A CN110847616A (en) | 2020-02-28 |
| CN110847616B true CN110847616B (en) | 2022-04-26 |
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| JPH0751840B2 (en) * | 1988-05-26 | 1995-06-05 | 株式会社大林組 | Lift up device |
| JP3732586B2 (en) * | 1996-08-21 | 2006-01-05 | 株式会社巴コーポレーション | Method and apparatus for constructing steel structure |
| CN1080801C (en) * | 1996-10-07 | 2002-03-13 | 邓庚厚 | Top-lifting building method of building from upper to lower |
| CN101748800A (en) * | 2009-12-30 | 2010-06-23 | 河南四建股份有限公司 | Hydraulic lifting reverse method of chimney steel inner cylinder |
| CN102108737A (en) * | 2011-01-18 | 2011-06-29 | 东北电业管理局烟塔工程公司 | Hydraulic lifting inverted construction method for steel inner cylinder of chimney in thermal power plant |
| CN102121273A (en) * | 2011-01-27 | 2011-07-13 | 福建工程学院 | Hydraulic lifting inversion method for reinforced concrete chimney steel inner cylinder |
| CN202831222U (en) * | 2012-09-26 | 2013-03-27 | 中国二十冶集团有限公司 | Jacking tower for large steel structure building constructions |
| CN203364707U (en) * | 2013-06-26 | 2013-12-25 | 中国二十冶集团有限公司 | Integral jacking difference measuring device for large-area web frame |
| CN103572834B (en) * | 2013-10-15 | 2016-01-06 | 江苏科技大学 | A kind of large-span arch structure and construction method thereof |
| CN105220769B (en) * | 2014-06-24 | 2017-06-30 | 中国二十冶集团有限公司 | Large area bolt-ball net frame integral top lifting construction method |
| CN104805907B (en) * | 2015-04-28 | 2017-07-14 | 中石化南京工程有限公司 | The jacking method and device of a kind of steel structure module |
| CN106760712A (en) * | 2017-01-20 | 2017-05-31 | 华电重工股份有限公司 | A kind of jacking installation method of steel structure cooling tower |
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| CN108071173B (en) * | 2017-12-24 | 2021-10-22 | 中国人民解放军陆军勤务学院 | Construction method of mass concrete |
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| CN110185151A (en) * | 2019-05-22 | 2019-08-30 | 三箭建设工程集团有限公司 | More hydraulic device synchronization of jacking up construction methods of wide span steel roof frame |
| CN110344501A (en) * | 2019-07-26 | 2019-10-18 | 广东建星建造集团有限公司 | A kind of construction method that Steel corridor is integrally promoted |
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Denomination of invention: Installation method of large volume steel flue Effective date of registration: 20221228 Granted publication date: 20220426 Pledgee: Qilu bank Limited by Share Ltd. Ji'nan Changqing branch Pledgor: SHANDONG GUOSHUN CONSTRUCTION GROUP Co.,Ltd. Registration number: Y2022980029384 |