CN115559556A - Butt joint construction method for A-shaped column and newly-added inclined outer frame column during reconstruction of super high-rise building - Google Patents
Butt joint construction method for A-shaped column and newly-added inclined outer frame column during reconstruction of super high-rise building Download PDFInfo
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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
- E04G23/00—Working measures on existing buildings
- E04G23/02—Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
- E04G23/0266—Enlarging
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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
- E04B1/24—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of metal
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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
- E04B1/24—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of metal
- E04B1/2403—Connection details of the elongated load-supporting parts
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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
- E04B1/24—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of metal
- E04B1/2403—Connection details of the elongated load-supporting parts
- E04B2001/2415—Brackets, gussets, joining plates
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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
- E04B1/24—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of metal
- E04B1/2403—Connection details of the elongated load-supporting parts
- E04B2001/2451—Connections between closed section profiles
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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
- E04B1/24—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of metal
- E04B1/2403—Connection details of the elongated load-supporting parts
- E04B2001/246—Post to post connections
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Abstract
The invention relates to a construction method for butting an A-shaped column and a newly-increased inclined outer frame column during reconstruction of a super high-rise building, which belongs to the technical field of reconstruction of super high-rise buildings. When the A-shaped column is connected with the newly-increased inclined outer frame column of the next layer and the newly-increased vertical outer frame column of the previous layer, the first inclined column leg of the A-shaped column is welded with the newly-increased inclined outer frame column on one surface of the next layer, the second inclined column leg of the A-shaped column is welded with the top of the newly-increased inclined outer frame column on the adjacent surface of the next layer, and finally the vertical column head of the A-shaped column is connected with the newly-increased vertical outer frame column on the previous layer. By adopting the construction method, the angle and the position of the new inclination-increasing outer frame column can be corrected through the vertical column head, and the butt joint precision is ensured.
Description
Technical Field
The invention belongs to the technical field of super high-rise building transformation, and particularly relates to a construction method for butting an A-shaped column and a newly-added inclined outer frame column during super high-rise building transformation.
Background
When the super high-rise building structure is transformed, the overall dimension of the upper transformed part structure is possibly smaller than that of the original structure, so that the outer frame column needs to be transformed in an inward contraction mode, and an inclined outer frame column needs to be newly added. The newly-added vertical outer frame column is difficult to be in butt joint with the newly-added inclined outer frame column, so that the load of the newly-added vertical outer frame column is transferred to the newly-added inclined outer frame column to become the difficulty of design and construction, and the newly-added inclined outer frame column and the newly-added vertical outer frame column are not welded at present.
The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art that is already known to a person skilled in the art.
Disclosure of Invention
The invention aims to provide a butt joint construction method of an A-shaped column and a newly-added inclined outer frame column during reconstruction of a super high-rise building, which can accurately butt joint the A-shaped column and the newly-added inclined outer frame column and reduce construction errors.
Therefore, the invention provides a butt joint construction method of an A-shaped column and a newly-added inclined outer frame column during super high-rise building reconstruction, which comprises the following steps:
s1, welding newly-added inclined outer frame columns to one side of an original vertical outer frame column, and welding tie beams between the newly-added inclined outer frame columns on the original vertical outer frame columns at the positions of two adjacent corner parts of a building;
s2, performing three-dimensional laser scanning on the prefabricated A-shaped column and the newly-added inclined outer frame column at the corner position, and reversely generating a model;
s3, importing the newly added inclined outer frame column model and the A-shaped column model into reverse analysis software to obtain a deviation value between the top of the newly added inclined outer frame column and the bottom of the A-shaped column, and judging whether the deviation value is within an acceptable range;
s4, aligning a first oblique column leg of the A-shaped column with a newly-added oblique outer frame column on one face of the corner position of the building, and welding the bottom of the first oblique column leg with the top of the newly-added oblique outer frame column;
s5, welding the bottom of the second inclined column leg of the A-shaped column with the top of the newly-added inclined outer frame column on the adjacent surface;
and S6, welding the top of the vertical column head of the A-shaped column with the bottom of the newly-added vertical outer frame column.
Preferably, in S5, if the center line of the second oblique column leg deviates from the center line of the newly added oblique outer frame column, the method for butting the second oblique column leg with the newly added oblique outer frame column includes the following steps:
s51, removing wall plates on two opposite sides of the bottom of the second inclined column leg;
s52, welding a column inner partition plate on the inner wall of the second inclined column leg above the dismantling position of the wall plate;
s53, welding the bottom of the second oblique column leg and the top of the newly-added oblique outer frame column through a connecting plate, wherein the connecting plate is not welded to the second oblique column leg and the newly-added oblique outer frame column, so that subsequent adjustment is facilitated;
s54, adjusting the angles of the two undetached wall plates of the second oblique column leg by using a jack to enable the bottom of the second oblique column leg to be in butt joint with the top of the newly added oblique outer frame column;
and S55, welding a new wall plate at the position where the wall plate is removed.
Preferably, when the inner column partition plate is welded in S52, a groove is cut in the inner column partition plate, the inner column partition plate is welded to the inner wall of the second inclined column leg, the welding seam is welded on the spot, and the grade of the welding seam is three.
Preferably, the grade of the welding seam between the connecting plate and the second inclined column leg and the newly-added inclined outer frame column in the S53 is a first-grade welding seam.
Preferably, in S55, before the new wall plate is repair-welded, a vertical reinforcing plate is welded between the intra-column partition plate and the newly-added inclined outer frame column, a horizontal reinforcing plate is welded to a side wall of the vertical reinforcing plate, and then the new wall plate is repair-welded at a position where the wall plate is removed.
Preferably, the wall plates repaired and welded in the S55 are parallelogram, and new wall plates are repaired and welded on site, wherein the grade of the welding seam is one grade.
Preferably, the method for welding the new additional inclined outer frame column to one side of the original vertical outer frame column in the step S1 comprises the following steps:
s11, welding a back plate on one side, far away from the original vertical outer frame column, of the bottom of the rectangular column of the newly-added inclined outer frame column, welding integrally-formed connecting side plates on two sides of a wall plate, close to the original vertical outer frame column, of the rectangular column, prefabricating to obtain the newly-added inclined outer frame column, and transporting the newly-added inclined outer frame column to a site;
s12, welding a support on one side, close to the newly-increased inclined outer frame column, of the original vertical outer frame column, hoisting the newly-increased inclined outer frame column to the top of the support, and welding the newly-increased inclined outer frame column with the support;
s13, welding the connecting side plate with the original vertical outer frame column;
and S14, welding the sealing cover plate among the top of the connecting side plate, the original vertical outer frame column and the rectangular column.
Preferably, a notch is reserved on the connecting side plate, and when a new additional inclined outer frame column is prefabricated, horizontal reinforcing ribs are respectively welded between the connecting side plates above and below the notch after the connecting side plates are welded; and S14, before welding the sealing cover plate, welding the sealing side plate at the reserved notch of the connecting side plate, and finally welding the sealing cover plate.
Preferably, the welding between the connecting side plate and the original vertical outer frame column and the welding between the horizontal reinforcing rib and the original vertical outer frame column are all prestressed welding.
Preferably, the method for manufacturing the A-shaped column in the S2 comprises the following steps:
s21, temporarily fixing a vertical plate of the A-shaped column, and then respectively welding transverse plates on two sides of the waist of the vertical plate;
s22, respectively fixing and welding a first inclined column leg and a second inclined column leg of the A-shaped column between the bottom of the transverse plate and the vertical plate;
s23, welding horizontal stiffening plates between the bottom of the vertical plate and the first oblique column leg and between the bottom of the vertical plate and the second oblique column leg, and then welding oblique stiffening plates on two sides of the vertical plate between the horizontal stiffening plates and the transverse plate;
and S24, welding vertical steel plates on the top of the transverse plate and two sides of the vertical plate to form a vertical column head.
Compared with the prior art, the invention has the characteristics and beneficial effects that:
(1) When the super large building outer frame post adduction is reformed transform, utilize A style of calligraphy post to be connected the adjacent new vertical outer frame post that increases of one deck bight position with the new vertical outer frame post of upper story, the structural style of this A style of calligraphy post is simple, and the power route of biography is simple, and specifically, superstructure's vertical power is transmitted the A style of calligraphy post by new vertical outer frame post to on transmitting the former vertical outer frame post of substructure through first batter post leg and second batter post leg. The steel beam that can be to A style of calligraphy post place floor produces pressure among the transmission of force, produces the pulling force to the steel beam of newly-increased oblique outer frame post place floor, and these two floors offset pulling force and pressure through measures such as increasing the girder steel cross-section, arranging the level and propping, strengthening the floor, accord with the transmission principle of force.
(2) When the A-shaped column is connected with the newly-added inclined outer frame column of the next layer and the newly-added vertical outer frame column of the previous layer, the first inclined column leg of the A-shaped column is welded with the newly-added inclined outer frame column on one surface of the next layer, then the second inclined column leg of the A-shaped column is welded with the top of the newly-added inclined outer frame column on the adjacent surface of the next layer, and finally the vertical column head of the A-shaped column is connected with the newly-added vertical outer frame column on the previous layer. By adopting the construction method, the angle and the position of the newly-increased inclined outer frame column can be corrected through the vertical column head, the butt joint precision is ensured, and the conditions of displacement, angle deviation and the like of the A-shaped column and the newly-increased inclined outer frame column on the upper layer after the A-shaped column is connected with the newly-increased inclined outer frame column on the lower layer are effectively prevented, so that the whole force transmission path of the structure is influenced.
(3) When the second oblique column leg of the A-shaped column is in butt joint with the newly-added oblique outer frame column, part of wall plates on two opposite sides of the second oblique column leg are firstly removed, then the inner wall of the second oblique column leg above the removal position is welded with the inner wall of the column, the A-shaped column is prevented from being deformed after the two side wall plates are cut off, then the second oblique column leg and the newly-added oblique outer frame column are welded through the connecting plate to control deviation, and after the connecting plate is installed, the A-shaped column leg and the oblique column are in a precise butt joint state and have no deviation. And the angles of the wall plates on the two remaining sides are adjusted, and finally, a new wall plate is welded at the position where the wall plate is detached, so that the condition that the installation is influenced after the deviation of the A-shaped column and the lower-layer inclined column occurs can be remedied.
Drawings
FIG. 1 is a schematic view of an adduction transformation of a super high-rise building;
FIG. 2 is a schematic view of the installation of a newly added oblique outer frame column and an A-shaped column;
FIG. 3 is a schematic view of the A-column;
FIG. 4 is a schematic view of the column A with the vertical column head omitted;
FIG. 5 is a schematic view of the second inclined leg of the A-pillar with the wall panel removed;
FIG. 6 is a schematic view of the A-shaped column after the second inclined leg is welded with the inner partition plate of the column;
FIG. 7 is a schematic view of the A-shaped column after the second inclined column leg is welded with the vertical reinforcing plate and the transverse reinforcing plate;
FIG. 8 is a schematic view of the A-shaped pillar after a wall plate is repair-welded to the second inclined pillar leg;
fig. 9 is a schematic diagram of the cracking of the original vertical outer frame column and the newly added oblique outer frame column.
The attached drawings are marked as follows: 1-original vertical outer frame column, 2-newly-increased inclined outer frame column, 21-rectangular column, 22-back plate, 23-connecting side plate, 24-sealing side plate, 25-sealing cover plate, 26-horizontal reinforcing rib, 3-A-shaped column, 31-first inclined column leg, 32-second inclined column leg, 33-vertical column cap, 34-vertical plate, 35-transverse plate, 36-horizontal stiffening plate, 37-inclined stiffening plate, 4-newly-increased vertical outer frame column, 5-wall plate, 6-column inner baffle, 7-connecting plate, 8-vertical stiffening plate, 9-horizontal stiffening plate, 10-support and 11-tie beam.
Detailed Description
In order to make the technical means, innovative features, objectives and functions realized by the present invention easy to understand, the present invention is further described below.
The examples described herein are specific embodiments of the present invention, are intended to be illustrative and exemplary in nature, and are not to be construed as limiting the scope of the invention. In addition to the embodiments described herein, those skilled in the art will be able to employ other embodiments that are obvious based on the disclosure of the claims and the specification herein, including those that employ any obvious substitutions and modifications to the embodiments described herein.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", and the like indicate orientations or positional relationships based on orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be configured in a specific orientation, and operate, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, such as "connected," which may be fixedly connected, detachably connected, or integrally connected; 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.
As shown in fig. 1 and 2, when the super high-rise building is contracted and transformed, the newly-added inclined outer frame columns 2 connected to the original vertical outer frame columns 1 of the two adjacent faces incline inwards and collide with each other to form a special a-shaped column node. A section of A-shaped column 3 is welded between a newly added inclined outer frame column 2 and a newly added vertical outer frame column 4, the A-shaped column 3 has large dead weight and special shape, wherein a first inclined column leg 31 and a second inclined column leg 32 of the A-shaped column 3 are respectively welded with the two newly added inclined outer frame columns 2, and a vertical column head 33 of the A-shaped column 3 is welded with the newly added vertical outer frame column 4.
As shown in fig. 9, the newly added oblique outer frame column 2 includes a rectangular column 21, a back plate 22 integrally connected to the bottom end of the rectangular column 21 and far away from one side of the original vertical outer frame column 1, a connecting side plate 23 integrally connected between the rectangular column 21 and the original vertical outer frame column 1, and a sealing cover plate 25 connected to the top of the connecting side plate 23 and between the original vertical outer frame column 1 and the rectangular column 21. The width of the rectangular column 21 is the same as that of the original vertical outer frame column 1. When the newly-added inclined outer frame column 2 is prefabricated, notches are reserved on the connecting side plates 23, and horizontal reinforcing ribs 26 are welded between the connecting side plates 23 above and below the notches.
As shown in fig. 3 and 4, the a-shaped column 3 comprises a first inclined column leg 31, a second inclined column leg 32 and a vertical column head 33, the cross section of which is rectangular, the tops of the first inclined column leg 31 and the second inclined column leg 32 are welded at one point, the included angles between the first inclined column leg 31 and the original vertical outer frame column 1 and between the second inclined column leg 32 and the original vertical outer frame column 1 are equal to each other and do not exceed 20 degrees, and in the angle range, the horizontal force of the floor where the a-shaped column is located and the floor where the newly-added inclined outer frame column 2 is located cannot be too large, so that the rationality of the stress of the structure is ensured. The extending direction of the first inclined pillar leg 31 is the same as the extending direction of one of the newly added inclined outer frame pillars 2, and the extending direction of the second inclined pillar leg 32 is the same as the extending direction of the other newly added inclined outer frame pillar 2. The vertical column heads 33 are welded on the top ends of the first inclined column leg 31 and the second inclined column leg 32, and the top ends of the vertical column heads 33 are connected on the bottom end of the newly added vertical outer frame column 4.
All welded at the top of first oblique column leg 31 and second oblique column leg 32 have diaphragm 35, and vertical column cap 33 welds the top at diaphragm 35, and welded connection has a riser 34 between the top of first oblique column leg 31 and second oblique column leg 32, and the top of riser 34 surpasss diaphragm 35 but is less than the top of vertical column cap 33. The horizontal plate 35 at the top of the first inclined pillar leg 31 is welded with one side of the vertical plate 34, and the horizontal plate 35 at the top of the second inclined pillar leg 32 is welded with the other side of the vertical plate 34. Horizontal stiffening plates 36 are welded at the bottoms of the vertical plates 34 and between the first oblique column legs 31 and the second oblique column legs 32, oblique stiffening plates 37 are welded at two sides of the vertical plates 34 between the horizontal stiffening plates 36 and the transverse plates 35, one side of one oblique stiffening plate 37 is welded with the first oblique column leg 31, and the other side of the oblique stiffening plate 37 is welded with one side of the vertical plate 34; one side of another oblique stiffening plate 37 is welded with the second oblique column leg 32, and the other side is welded with the other side of the vertical plate 34. A closed space is formed between the transverse plate 35, the horizontal stiffening plate 36, the oblique stiffening plate 37 and the first oblique column leg 31 and the second oblique column leg 32.
The construction method for butting the A-shaped column and the newly-added inclined outer frame column during the reconstruction of the super high-rise building specifically comprises the following steps:
s1, welding the newly-added inclined outer frame column 2 on one side of the original vertical outer frame column 1, and welding a tie beam 11 between the newly-added inclined outer frame column 2 on the original vertical outer frame column 1 at two adjacent corner positions of the building.
The method for welding the newly added inclined outer frame column 2 to one side of the original vertical outer frame column 1 comprises the following steps:
s11, welding a back plate 22 at one side, far away from the original vertical outer frame column 1, of the bottom of the rectangular column 21 of the newly added inclined outer frame column 2, welding integrally-formed connecting side plates 23 at two sides, close to the wall plate of the original vertical outer frame column 1, of the rectangular column 21, prefabricating to obtain the newly added inclined outer frame column 2 and transporting the newly added inclined outer frame column to the site. Notches are reserved on the connecting side plates 23, and when the newly-added inclined outer frame column 2 is prefabricated, horizontal reinforcing ribs 26 are respectively welded between the connecting side plates 23 above and below the notches after the connecting side plates 23 are welded.
S12, welding a support 10 serving as a bottom support at one side, close to the newly added inclined outer frame column 2, of the original vertical outer frame column 1, hoisting the newly added inclined outer frame column 2 to the top of the support 10, and welding the newly added inclined outer frame column 2 with the support 10.
S13, welding the connecting side plate 23 with the original vertical outer frame column 1, and then welding the horizontal reinforcing rib 26 with the original vertical outer frame column 1. When the connecting side plate 23 is welded with the original vertical outer frame column 1, a vertical welding seam below the horizontal reinforcing rib 26 is constructed firstly, and two welding workers are required to perform welding operation simultaneously during welding, so that the welding length of the welding seam is ensured to be synchronous. Then, a welding seam above the horizontal reinforcing rib 26 is constructed, and two welders are required to synchronously weld at the moment, so that the welding displacement is prevented from being deformed, and the deformation is controlled. When the horizontal reinforcing rib 26 is welded with the original vertical outer frame column 1, the welding seam of the upper horizontal reinforcing rib 26 is constructed firstly, and the welding operable space at the position is small. Then, the welding seam of the lower horizontal reinforcing rib 26 is constructed, and the welding seam also has the problem of small operation space and has higher requirements for welding workers.
And S14, welding a sealing cover plate 25 between the top of the connecting side plate 23, the original vertical outer frame column 1 and the rectangular column 21. Before welding the sealing cover plate 25, the sealing side plate 24 is welded at the notch reserved in the connecting side plate 23, and finally the sealing cover plate 25 is welded. The welding between the connecting side plate 23 and the original vertical outer frame column 1 and the welding between the horizontal reinforcing rib 26 and the original vertical outer frame column 1 are all prestressed welding.
And S2, performing three-dimensional laser scanning on the prefabricated A-shaped column 3 and the newly-added inclined outer frame column 2 at the corner position, and reversely generating a model.
The manufacturing method of the A-shaped column 3 comprises the following steps:
s21, temporarily fixing the vertical plate 34 of the A-shaped column 3, and then welding the transverse plate 35 on the two sides of the waist part of the vertical plate 34.
And S22, respectively fixing the first inclined column leg 31 and the second inclined column leg 32 of the A-shaped column 3 between the bottom of the transverse plate 35 and the vertical plate 34 and welding.
And S23, welding a horizontal stiffening plate 36 between the bottom of the vertical plate 34 and the first inclined column leg 31 and the second inclined column leg 32, and then welding inclined stiffening plates 37 on two sides of the vertical plate 34 between the horizontal stiffening plate 36 and the transverse plate 35.
And S24, welding vertical steel plates on the top of the transverse plate 35 and two sides of the vertical plate 34 to form a vertical column head 33, wherein the vertical column head 33 is formed by splicing the steel plates in a scattered manner. Finally, the vertical column head 33 is assembled, so that the vertical column head 33 and the newly added vertical outer frame column 4 can be prevented from being butted due to angle deviation. If the vertical column 33 and the a-column 3 are prefabricated from the factory as a whole, this component cannot be installed and cannot be adjusted on site if deviations occur. In addition, after the bottom end of the A-shaped column 3 is connected with the newly added oblique outer frame column 2, the angle and the position of the newly added oblique outer frame column 2 can be corrected through the vertical column head 33.
The stress condition of the A-shaped column 3 needs to be accurately analyzed in the early stage of manufacturing, and the precision needs to be ensured during processing. The A-shaped columns 3 are used as transition steel columns, two adjacent steel columns on the next layer of the building corner can be connected, and one steel column on the next layer is connected.
And S3, importing the newly added oblique outer frame column model and the A-shaped column model into reverse analysis software to obtain a deviation value between the top of the newly added oblique outer frame column 2 and the bottom of the A-shaped column 3, and judging whether the deviation value is within an acceptable range.
And S4, aligning the first oblique column leg 31 of the A-shaped column 3 with the newly added oblique outer frame column 2 on one face of the corner position of the building, and welding the bottom of the first oblique column leg 31 with the top of the newly added oblique outer frame column 2.
And S5, welding the bottom of the second inclined column leg 32 of the A-shaped column 3 with the top of the newly added inclined outer frame column 2 on the adjacent surface.
If the central line of the second inclined column leg 32 deviates from the central line of the newly added inclined outer frame column 2, taking a certain project as an example, the north-south deviation of the second inclined column leg 32 and the newly added inclined outer frame column 2 is 35mm, and the east-west deviation is 30mm. At this time, the method for butting the second inclined column leg 32 and the newly added inclined outer frame column 2 comprises the following steps:
s51, as shown in fig. 5, removing the wall plates 5 at two opposite sides of the bottom of the second inclined pillar leg 32, specifically taking a project as an example, the removing height is 1m.
S52, as shown in fig. 6, welding an inter-pillar baffle 6 to the inner wall of the second diagonal pillar leg 32 above the removed position of the wall plate 5, specifically taking a certain engineering example, the inter-pillar baffle 6 is 200mm above the removed position, the thickness of the inter-pillar baffle 6 is 20mm, and the material is Q355B. When the inner column baffle 6 is welded, a groove is cut on the inner column baffle 6, the inner column baffle 6 is welded with the inner wall of the second inclined column leg 32, the welding seam is in three grades on the spot in an overhead welding mode.
S53, the bottom of the second oblique column leg 32 and the top of the newly-added oblique outer frame column 2 are welded through the connecting plate 7, and at the moment, the connecting plate 7, the second oblique column leg 32 and the newly-added oblique outer frame column 2 are not welded to be dead, so that subsequent adjustment is facilitated. The grade of the welding seam between the connecting plate 7, the second oblique column leg 32 and the newly added oblique outer frame column 2 is a first-grade welding seam.
And S54, adjusting the angles of the two undetached wall plates 5 of the second inclined column leg 32 by using a jack, so that the bottom of the second inclined column leg 32 is butted with the top of the newly added inclined outer frame column 2, and the position of the removed wall plate 5 is in a parallelogram shape. After the angle is adjusted, the south-north deviation of the second oblique column leg 32 and the newly-added oblique outer frame column 2 is 10mm, the east-west deviation is 10mm, and welding seams are adopted for leveling on site.
S55, as shown in FIG. 8, a new wall plate 5 is repair-welded to the position where the wall plate 5 is removed. The wall plates 5 are in a parallelogram shape, new wall plates 5 are subjected to field repair welding, and the grade of welding seams is one grade. As shown in fig. 7, before the new wall plate 5 is repair-welded, a vertical reinforcing plate 8 is welded between the column inner partition plate 6 and the newly added inclined outer frame column 2, a horizontal reinforcing plate 9 is welded to the side wall of the vertical reinforcing plate 8, and then the new wall plate 5 is repair-welded at the position where the wall plate 5 is removed. The vertical reinforcing plate 8 and the transverse reinforcing plate 9 are both 20mm in thickness and made of Q355B.
And S6, welding the top of the vertical column head 33 of the A-shaped column 3 with the bottom of the newly added vertical outer frame column 4.
The above examples are only for describing the preferred embodiments of the present invention, and are not intended to limit the scope of the present invention, and various modifications and improvements made to the technical solution of the present invention by those skilled in the art without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.
Claims (10)
1. A butt joint construction method of an A-shaped column and a newly-added inclined outer frame column during super high-rise building reconstruction is characterized by comprising the following steps:
s1, welding newly-added oblique outer frame columns (2) to one side of an original vertical outer frame column (1), and welding tie beams (11) between the newly-added oblique outer frame columns (2) on the original vertical outer frame column (1) at the positions of two adjacent face corners of a building;
s2, performing three-dimensional laser scanning on the prefabricated A-shaped column (3) and the newly-added inclined outer frame column (2) at the corner position, and reversely generating a model;
s3, importing the newly added oblique outer frame column model and the A-shaped column model into reverse analysis software to obtain a deviation value between the top of the newly added oblique outer frame column (2) and the bottom of the A-shaped column (3), and judging whether the deviation value is within an acceptable range;
s4, aligning a first oblique column leg (31) of the A-shaped column (3) with the newly-added oblique outer frame column (2) on one face of the corner position of the building, and welding the bottom of the first oblique column leg (31) with the top of the newly-added oblique outer frame column (2);
s5, welding the bottom of the second inclined column leg (32) of the A-shaped column (3) with the top of the newly added inclined outer frame column (2) on the adjacent surface;
s6, welding the top of the vertical column head (33) of the A-shaped column (3) with the bottom of the newly added vertical outer frame column (4).
2. The butt joint construction method of the a-shaped column and the newly-added inclined outer frame column in the reconstruction of the super high-rise building according to claim 1, wherein the butt joint method of the second inclined column leg (32) and the newly-added inclined outer frame column (2) comprises the following steps if the center line of the second inclined column leg (32) deviates from the center line of the newly-added inclined outer frame column (2) in S5:
s51, dismantling wall plates (5) on two opposite sides of the bottom of the second oblique column leg (32);
s52, welding an inner column partition plate (6) on the inner wall of the second oblique column leg (32) above the dismantling position of the wall plate (5);
s53, welding the bottom of the second oblique column leg (32) and the top of the newly-added oblique outer frame column (2) through a connecting plate (7), wherein the connecting plate (7) is not welded with the second oblique column leg (32) and the newly-added oblique outer frame column (2) at the moment, so that subsequent adjustment is facilitated;
s54, adjusting the angles of the two undetached wall plates (5) of the second oblique column leg (32) by using a jack, and enabling the bottom of the second oblique column leg (32) to be in butt joint with the top of the newly added oblique outer frame column (2);
and S55, repair welding a new wall plate (5) at the position of the removed wall plate (5).
3. The butt joint construction method of the A-shaped column and the newly-added inclined outer frame column during the reconstruction of the super high-rise building according to claim 2, characterized in that: and S52, when the inner column partition plate (6) is welded, a groove is cut on the inner column partition plate (6), the inner column partition plate (6) is welded with the inner wall of the second inclined column leg (32), the welding seam is in three-level grade in an overhead welding mode.
4. The butt joint construction method of the A-shaped column and the newly-added inclined outer frame column during the reconstruction of the super high-rise building according to claim 2, characterized in that: and S53, the grade of the welding seam between the connecting plate (7) and the second inclined column leg (32) as well as the newly added inclined outer frame column (2) is a first-grade welding seam.
5. The butt joint construction method of the A-shaped column and the newly-added inclined outer frame column during the reconstruction of the super high-rise building according to claim 2, characterized in that: in S55, before the new wall plate (5) is subjected to repair welding, a vertical reinforcing plate (8) is welded between the inner column partition plate (6) and the newly-added inclined outer frame column (2), a transverse reinforcing plate (9) is welded on the side wall of the vertical reinforcing plate (8), and then the new wall plate (5) is subjected to repair welding at the position where the wall plate (5) is removed.
6. The butt joint construction method of the A-shaped column and the newly-added inclined outer frame column during the reconstruction of the super high-rise building according to claim 5, characterized in that: and (5) in the S55, the repair-welded wall plate (5) is in a parallelogram shape, a new wall plate (5) is repair-welded on site, and the welding seam grade is one grade.
7. The butt joint construction method of the A-shaped column and the newly-increased inclined outer frame column in the reconstruction of the super high-rise building according to claim 1, wherein the method for welding the newly-increased inclined outer frame column (2) to one side of the original vertical outer frame column (1) in the S1 comprises the following steps:
s11, welding a back plate (22) on one side, far away from the original vertical outer frame column (1), of the bottom of the rectangular column (21) of the newly added inclined outer frame column (2), welding integrally-formed connecting side plates (23) on two sides of a wall plate, close to the original vertical outer frame column (1), of the rectangular column (21), prefabricating to obtain the newly added inclined outer frame column (2), and transporting to the site;
s12, welding a support (10) on one side, close to the newly-added inclined outer frame column (2), of the original vertical outer frame column (1), hoisting the newly-added inclined outer frame column (2) to the top of the support (10), and welding the newly-added inclined outer frame column (2) with the support (10);
s13, welding the connecting side plate (23) with the original vertical outer frame column (1);
s14, welding a sealing cover plate (25) between the top of the connecting side plate (23) and the original vertical outer frame column (1) and the rectangular column (21).
8. The butt joint construction method of the A-shaped column and the newly-added inclined outer frame column during the reconstruction of the super high-rise building according to claim 7, characterized in that: a notch is reserved on the connecting side plate (23), and when the newly-added inclined outer frame column (2) is prefabricated, horizontal reinforcing ribs (26) are respectively welded between the connecting side plates (23) above and below the notch after the connecting side plates (23) are welded; in S14, before the sealing cover plate (25) is welded, the sealing side plate (24) is welded at the reserved notch of the connecting side plate (23), and finally the sealing cover plate (25) is welded.
9. The butt joint construction method of the A-shaped column and the newly-added inclined outer frame column during the reconstruction of the super high-rise building according to claim 8, characterized in that: the welding between the connecting side plate (23) and the original vertical outer frame column (1) and the welding between the horizontal reinforcing rib (26) and the original vertical outer frame column (1) are all prestressed welding.
10. The butt joint construction method of the A-shaped column and the newly-added inclined outer frame column during the reconstruction of the super high-rise building according to claim 1, wherein the manufacturing method of the A-shaped column (3) in the S2 comprises the following steps:
s21, temporarily fixing a vertical plate (34) of the A-shaped column (3), and then respectively welding transverse plates (35) on two sides of the waist of the vertical plate (34);
s22, respectively fixing a first inclined column leg (31) and a second inclined column leg (32) of the A-shaped column (3) between the bottom of a transverse plate (35) and a vertical plate (34) and welding;
s23, welding horizontal stiffening plates (36) among the bottoms of the vertical plates (34), the first oblique column legs (31) and the second oblique column legs (32), and then welding oblique stiffening plates (37) on two sides of the vertical plates (34) between the horizontal stiffening plates (36) and the transverse plates (35);
s24, welding vertical steel plates on the top of the transverse plate (35) and two sides of the vertical plate (34) to form a vertical column head (33).
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| JP2000345696A (en) * | 1999-06-03 | 2000-12-12 | Tomoe Giken:Kk | Elevating/lowering suspension frame |
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