CN115012585A - Lattice steel column for unequal-height multi-span plant and assembling method thereof - Google Patents
Lattice steel column for unequal-height multi-span plant and assembling method thereof Download PDFInfo
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- CN115012585A CN115012585A CN202210761322.2A CN202210761322A CN115012585A CN 115012585 A CN115012585 A CN 115012585A CN 202210761322 A CN202210761322 A CN 202210761322A CN 115012585 A CN115012585 A CN 115012585A
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 196
- 239000010959 steel Substances 0.000 title claims abstract description 196
- 238000000034 method Methods 0.000 title claims description 19
- 238000004519 manufacturing process Methods 0.000 claims abstract description 14
- 238000003466 welding Methods 0.000 claims description 37
- 230000003014 reinforcing effect Effects 0.000 claims description 8
- 238000005452 bending Methods 0.000 claims description 4
- 238000005728 strengthening Methods 0.000 claims description 2
- 238000010276 construction Methods 0.000 abstract description 5
- 230000008569 process Effects 0.000 description 8
- 238000005192 partition Methods 0.000 description 5
- 238000009434 installation Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- HSFWRNGVRCDJHI-UHFFFAOYSA-N alpha-acetylene Natural products C#C HSFWRNGVRCDJHI-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 125000002534 ethynyl group Chemical group [H]C#C* 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- 238000006467 substitution reaction Methods 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/30—Columns; Pillars; Struts
- E04C3/32—Columns; Pillars; Struts of metal
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/18—Submerged-arc welding
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
Abstract
The invention discloses a lattice steel column for a different-height multi-span factory building, which comprises an upper column and a lower column, wherein the bottom end of the upper column is connected to the top end of the lower column, the bottom end of the lower column is fixedly connected with the ground, the top end of the upper column is bent leftwards along the transverse direction to form a left connecting section for being connected with a left span factory building roof beam, the top end of the lower column is provided with a roof beam bracket which is arranged in a protruding mode rightwards along the transverse direction, and the roof beam bracket is used for being connected with a right span factory building roof beam; can satisfy the application of lattice steel column in the steel construction factory building of striding more than the inequality height in the manufacturing process, can adjust the structure of lattice steel column according to the characteristics of steel construction factory building, improve the application space of lattice steel column, guarantee that lattice steel column will be at the structural stability after the steel construction factory building of striding more than the inequality height is connected.
Description
Technical Field
The invention relates to the field of building components, in particular to a lattice steel column for unequal-height multi-span plants and an assembly method thereof.
Background
In various types of steel-structured factory building structures, it is common to design a new type of lattice steel column of asymmetrical structure, the main structure of the lattice steel column has wide application, needs to be connected with roof girders with large span and weight and crane girders of multi-span plants, the connection strength and quality of the steel column and other structures are ensured, and the multifunctional use of the factory building is also met, at present, for lattice steel columns in unequal-height multi-span factory buildings, two lattice steel columns which are arranged in a back direction or reinforcing structures are additionally arranged to improve the support strength of the lattice steel columns so as to realize the application of the lattice steel columns in the steel structure factory building, but the mode of increasing the structural strength of the lattice steel columns adopts a mode of additionally welding reinforcing members, although the cost is low, the defect positions of the lattice steel parts are increased, and the application of the lattice steel columns in the unequal-height multi-span steel structure factory building is not facilitated.
Therefore, in order to solve the above problems, a lattice steel column for a different-height multi-span plant and an assembly method thereof are needed, which can meet the application of the lattice steel column in the different-height multi-span steel structure plant in the manufacturing process, adjust the structure of the lattice steel column according to the characteristics of the steel structure plant, improve the application space of the lattice steel column, and ensure the structural stability of the lattice steel column after the different-height multi-span steel structure plant is connected.
Disclosure of Invention
In view of the above, the present invention is to overcome the defects in the prior art, and provide a lattice steel column for a factory building with unequal heights and multiple spans and an assembly method thereof, which can meet the application of the lattice steel column in the factory building with the unequal heights and the multiple spans in the manufacturing process, adjust the structure of the lattice steel column according to the characteristics of the factory building with the steel structure, improve the application space of the lattice steel column, and ensure the structural stability of the lattice steel column after the connection of the factory building with the unequal heights and the multiple spans.
The lattice steel column for the unequal-height multi-span factory building comprises an upper column and a lower column, wherein the bottom end of the upper column is connected to the top end of the lower column, the bottom end of the lower column is fixedly connected with the ground, the top end of the upper column is bent leftwards along the transverse direction to form a left connecting section for being connected with a left-span factory building roof beam, the top end of the lower column is provided with a roof beam bracket which is arranged in a protruding mode rightwards along the transverse direction, and the roof beam bracket is used for being connected with a right-span factory building roof beam.
Further, the top of lower prop is equipped with crane beam backing plate, crane beam backing plate is used for placing the main crane roof beam of left-hand span factory building, the bottom of upper prop is located between crane beam backing plate and the roof beam bracket.
Further, the middle part of lower prop height direction is equipped with left side and strides the bracket, left side is striden the bracket and is located the horizontal left side of lower prop, left side is striden the bracket and is used for placing the inferior crane beam of left side span factory building.
Further, the middle part of lower prop height direction is equipped with the bracket of striding on the right side, the bracket is located the horizontal right side of lower prop on the right side, the bracket is used for placing the crane beam of the factory building of striding on the right side to stride on the right side.
Further, the left-span bracket and the right-span bracket are arranged in a staggered mode in the height direction.
Further, the lower column is fixed on the bottom surface through a column bottom connecting component.
Further, the upper column comprises a straight section web, a bent section web, an inner side flange and an outer side flange, the straight section web is connected with the bent section web and the lower column, the inner side flange comprises a straight section left flange covering the horizontal left edge of the straight section web and a straight section right flange covering the horizontal right edge of the straight section web, and the outer side flange comprises an upper flange covering the upper edge of the bent section web in the height direction and a bent section flange covering the lower edge of the bent section web in the height direction.
Furthermore, the upper flange is vertically connected with the straight section right flange.
Further, the lower column comprises H-shaped steel arranged at the transverse left end and channel steel arranged at the transverse right end; a plurality of reinforcing structures are arranged between the H-shaped steel and the channel steel.
Furthermore, H shaped steel and channel-section steel pass through a plurality of additional strengthening to separate into a plurality of manhole.
The invention also discloses an assembly method for the lattice steel column for the unequal-height multi-span factory building, which is characterized by comprising the following steps of: the method comprises the following steps:
s1, correspondingly assembling an upper column and a lower column respectively;
s2, correspondingly assembling the upper column and the lower column into a latticed steel column whole;
the manufacturing process of the upper column in the step S1 mainly comprises bending the arc-shaped flanges, assembling the web plates with the upper flange, the lower flange and the upper flange, and completing welding; the manufacturing process of the lower column comprises the steps of taking a web plate of channel steel as a datum plane, after H-shaped steel is placed in an aligned mode, firstly installing a part plate of the column bottom connecting assembly, then gradually installing each pointed beam structure, various supports and brackets from the top of the column to the bottom of the column, and after the lower column is assembled, gradually completing welding of welding seams.
The invention has the beneficial effects that: the invention discloses a lattice steel column for a workshop with different heights and multiple spans, which is of an asymmetric structure in composition form, can be used for loading a plurality of crane beams on the steel column and meets the use of various hoisting equipment of the workshop with multiple spans; the manhole cover is provided with a plurality of manholes, and each operator can have a plurality of operation ways and ways for overhauling equipment in the use process; and roof girders of plants with different heights can be respectively connected with the two sides of the steel column.
Drawings
The invention is further described below with reference to the following figures and examples:
FIG. 1 is a schematic view of an assembled structure of an upper column according to the present invention;
FIG. 2 is a schematic view of the assembled structure of the lower column of the present invention;
FIG. 3 is a schematic view of the attachment mounting structure of the lower column of the present invention;
FIG. 4 is a schematic structural view of the present invention;
FIG. 5 is a schematic view of the construction of the turn buckle according to the present invention.
Detailed Description
Fig. 1 is a schematic structural diagram of the present invention, and as shown in the drawing, the lattice steel column for a multi-span factory building with unequal heights in this embodiment includes an upper column and a lower column, a bottom end of the upper column is connected to a top end of the lower column, a bottom end of the lower column is fixed to the ground, a bottom connection component 15 of the lower column is fixed to the ground, a top end of the upper column is bent leftward along a transverse direction to form a left connection section for connecting with a left-span factory building roof girder, a top end of the lower column is provided with a roof girder bracket 19 protruding rightward along the transverse direction, and the roof girder bracket 19 is used for connecting with a right-span factory building roof girder. As shown in the figure, it is whole that upper prop and lower prop separately make and follow-up installation is fixed to form the lattice steel column alone for the lattice steel column in this scheme can directly be applied to wait high multispan factory building also can be applied to the different height multispan factory building, and split type structure has improved the convenience that the lattice steel column used, and can treat the support location and carry out reasonable selectivity and use, improve the commonality that the lattice steel column used.
In this embodiment, the top of lower prop is equipped with crane beam backing plate 23, crane beam backing plate 23 is used for placing the main crane beam of left-hand span factory building, crane beam backing plate 23's effect lies in improving the support intensity to main crane beam, the bottom of going up the post is located between crane beam backing plate 23 and the roof beam bracket 19 for it can be more stable and lower prop connection assembly form wholly to go up the post.
In the embodiment, a left span corbel 17 is arranged in the middle of the lower column in the height direction, the left span corbel 17 is located on the left side of the lower column in the transverse direction, and the left span corbel 17 is used for placing a secondary crane beam of a left span workshop; the middle part of the lower column in the height direction is provided with a right-span bracket 18, the right-span bracket 18 is positioned on the transverse right side of the lower column, and the right-span bracket 18 is used for placing a crane beam of a right-span workshop; the left-span corbel 17 and the right-span corbel 18 are arranged in a staggered manner in the height direction. As shown in the figure, the left span bracket 17 and the right span bracket 18 are respectively arranged at two sides of the lattice steel column and are connected in a staggered manner in the height direction, so that the versatility of the lattice steel column can be improved, and the utilization rate of field resources can be improved.
In this embodiment, the lower column is fixed to the bottom surface through the column bottom connection assembly 15. The fixing stability of the whole lattice steel column is improved.
In this embodiment, as shown in the drawing, the upper column includes a straight web 4, a bent web 6, an inner flange and an outer flange, the straight web 4 connects the bent web 6 with the lower column, the inner flange includes a straight left flange 5 covering a horizontal left edge of the straight web 4 and a straight right flange 3 covering a horizontal right edge of the straight web 4, and the outer flange includes an upper flange 8 covering an upper edge of the bent web 6 in a height direction and a bent flange 7 covering a lower edge of the bent web 6 in the height direction; the upper flange 8 is vertically connected with the straight section right flange 3; the structure weight is reduced, and the structure is reinforced.
In this embodiment, the lower column includes an H-shaped steel 12 arranged at the horizontal left end and a channel steel 11 arranged at the horizontal right end; a plurality of reinforcing structures are arranged between the H-shaped steel 12 and the channel steel 11; the H-shaped steel 12 and the channel steel 11 are divided into a plurality of manholes 22 through a plurality of reinforcing structures. In the scheme, a plurality of reinforcing structures are not of the same structure and mainly comprise a top sharp beam 13, an inclined strut connecting assembly 14, a support sharp beam 16, a bracket sharp beam 20 and a manhole sharp beam 21; the corresponding functions and the structure are strengthened, and the details are not repeated.
The invention also discloses an assembly method based on the lattice steel column for the unequal-height multi-span factory building, which is characterized by comprising the following steps of: the method comprises the following steps:
s1, correspondingly assembling an upper column and a lower column respectively;
s2, correspondingly assembling the upper column and the lower column into a latticed steel column whole;
in the step S1, the manufacturing process of the upper column mainly comprises bending the arc-shaped flanges, assembling the web plates with the upper flange, the lower flange and the upper flange 8, and completing welding; the manufacturing process of the lower column comprises the steps of taking the web of the channel steel 11 as a datum plane, aligning and placing the H-shaped steel 12, installing the part plate of the column bottom connecting assembly 15, installing each sharp beam structure, various supports and brackets from the column top to the column bottom step by step, and finishing welding of a welding seam step by step after the lower column is assembled.
The steel column is formed by connecting an upper column and a lower column, wherein the upper column is used for connecting a left span workshop roof beam, the lower column is used as a main structure for placing a crane beam, and walkway boards can be laid on two manhole pointed beams 21 arranged in the middle of the lower column, so that personnel can walk through a steel column manhole 22 when the workshop is used;
the web plate of the upper column is of a large-small head structure, the lower end of the straight section web plate 4 is used for being connected with the lower column, and the upper end of the bent section web plate 6 close to the left is used for being connected with a left span workshop roof girder; the bent section web 6 is in an arc-shaped structure close to the left edge, and the right end edge of the bent section web 6 is in a straight line vertical to the horizontal plane; the edges of the straight section web 4 and the bent section web 6 are covered with corresponding flanges except for the positions for connecting the left span workshop roof beam and the lower column;
the lower column is provided with an H-shaped steel 12 and a channel steel 11 as main body supporting structures, and the H-shaped steel 12 and the channel steel 11 are connected through a plurality of pointed beam structures (a top pointed beam 13, a supporting pointed beam 16, a corbel pointed beam 20 and the like) and an inclined strut connecting assembly 14; the right end of the upper column straight section web 4 is connected with the upper end extension face of the web of the channel steel 11 of the lower column in a straight-line vertical flange manner; the left side of the web 6 of the upper column bent section is used for connecting a roof girder of a left-span workshop;
in the main structure of the lower column, a crane beam backing plate 23 is arranged above a column top plate at the top of the H-shaped steel 12 and used for placing a main crane beam of a left-span workshop; in the main structure of the lower column, a roof girder bracket 19 is arranged on one side of a web plate at the top of the channel steel 11 and connected with the channel steel 11, and the roof girder bracket 19 is used for connecting a roof girder of a right-span workshop; in the main structure of the lower column, the middle part of the H-shaped steel 12 is close to the left side of the steel column, and a left span bracket 17 is connected with the H-shaped steel 12 and used for placing a secondary crane beam of a left span workshop; in the main structure of the lower column, the middle part of the channel steel 11 is close to the right side of the steel column, and a right span bracket 18 is connected with the channel steel 11 and used for placing a crane beam of a right span workshop; and the bottom of the lower column, the bottom of the H-shaped steel 12 and the bottom of the channel steel 11 are both designed with column bottom connecting components 15, and the column bottom connecting components 15 are used for being connected with concrete on the ground.
The invention comprises the following implementation steps:
1. the lattice steel column in the scheme is of an asymmetric structure, and the lattice steel column of the asymmetric structure is manufactured by firstly manufacturing an upper column and a lower column separately and then connecting the upper column and the lower column into a steel column whole; the manufacturing process of the upper column mainly comprises bending of arc flanges, assembling of a web plate, the upper flange, the lower flange and the upper flange 8, and welding; the manufacturing process of the lower column comprises the steps of taking the web of the channel steel 11 as a datum plane, aligning and placing the H-shaped steel 12, installing the part plate of the column bottom connecting assembly 15, installing each sharp beam structure, various supports and brackets from the column top to the column bottom step by step, and finishing welding of a welding seam step by step after the lower column is assembled. After the upper column and the lower column are respectively welded, the butt joint process is finally completed, and the upper column and the lower column are welded into a whole;
the lattice steel column with the asymmetric structure is characterized in that a plurality of crane beams can be loaded on the steel column, and the use of various hoisting equipment of a multi-span factory building is met; the manhole 22 is provided, and each operator can walk among the steel columns in multiple ways during use, namely different operation ways or ways for overhauling equipment are provided; in addition, roof girders of plants with different heights can be respectively connected to two sides of the steel column, so that the application in different-height multi-span plants is realized, and the problems that a plurality of lattice steel columns occupy large space and a single lattice steel column reinforcement causes unstable lattice steel column structures are solved;
in the scheme, the manufacturing process of the upper column structure comprises the following steps:
the manufacturing process of the upper column is simple: (1) firstly, a straight section right flange 3 is abutted to the side of a baffle 2 on an I-shaped steel platform 1, spot welding is carried out for fixing, the verticality between the straight section right flange 3 and the horizontal plane is checked by using a pendant line, cushion blocks are applied to two ends of the straight section right flange 3, the height of each cushion block is parallel to the central line of the height of the straight section right flange 3, a line is drawn on the central line, a straight section web 4 is taken by using lifting equipment on the basis of the cushion blocks to be aligned with the position of the drawn line, the lifting height is continuously adjusted in suspension, the plane of the whole straight section web 4 is ensured to be basically horizontal to the ground, and the straight section right flange 3 and the straight section web 4 are slightly reinforced by spot welding; (2) aligning the center line of the straight section left flange 5 in the height direction with the straight section web 4, and slightly reinforcing the straight section left flange 5 and the straight section web 4 by spot welding; (3) the small end of the bent section web 6 is hung and aligned with the straight section web 4, and the installation and spot welding processes are completed in the same way; (4) then respectively lifting the bent flange 77 and the upper flange 8, and completing the mounting and spot welding processes in a similar manner as before; (5) finally, the upper column bracket 9 and various stiffened plates are installed in a line drawing and positioning mode and fixed by spot welding; and finally, moving the upper column into a welding working section, and completing welding of each welding line.
2. The assembly process of the lower column structure is as follows:
(1) welding baffle plates 2 on the rear parts of a plurality of I-steel platforms 1 prepared in a workshop in advance, wherein the length directions of the baffle plates 2 are parallel to the length directions of the I-steel platforms 1, welding a baffle plate 2 on each I-steel platform 1, and the baffle plates 2 are parallel to each other and are overlapped in the position perpendicular to the length directions of the I-steel platforms 1;
in order to ensure the positioning effect and quality of the baffle 2, the baffle 2 is made of a steel plate with the thickness delta being 20mm, and the thickness of the baffle 2 is equal to or greater than the height of a web plate of 3/4 channel steel 11.
(2) Putting a channel steel 11 welded by submerged arc welding above the I-steel platforms 1, wherein the length direction of the channel steel 11 is vertical to that of the I-steel platforms 1, the height direction of a web plate of the channel steel 11 is vertical to the ground, a lower flange of the channel steel 11 leans against an upper flange 8 of the I-steel platforms 1, and the web plate of the channel steel leans against one side of the thickness of the baffle 2;
(3) the two ends of each turn buckle 10 are respectively welded on webs of the I-steel platform 1 and the channel steel 11, the direction of a lifting hook of each turn buckle is welded on the flange of the I-steel platform 1, the direction of a circular ring of each turn buckle 10 is welded on the web, each I-steel platform 1 is welded with one turn buckle 10, the length direction of each turn buckle 10 is parallel to the length direction of the I-steel platform 1, and the height of the circular ring is greater than or equal to 3/4 of the web of the channel steel 11.
During specific implementation, an operator rotates the flower basket in the middle of the plurality of flower basket screws 10 clockwise along the direction of the channel steel 11, and due to the structure that the screws of the two sections of the flower basket screws are matched with the threaded holes of the flower basket, the lifting hooks and the circular rings at the two ends of the flower basket screws 10 shrink towards the flower basket in the middle of the flower basket screws, so that the channel steel 11 is tightly close to the baffle 2 and the I-shaped steel platform 1;
(5) an operator places the H-shaped steel 12 welded by submerged arc welding on one side of the channel steel 11 in advance, the direction of the H-shaped steel 12 is parallel to the channel steel 11, various part plates of the column bottom connecting component 15 at the tail part of the H-shaped steel 12 are firstly installed in a line drawing and positioning mode, and the part plates are sequentially fixed by spot welding; the H-beam 12 is also assembled on the i-beam platform 1 by a plurality of turnbuckles 10 according to the fixing manner of the channel steel 11, which will not be described herein,
(4) an operator uses a web plate of the channel steel 11 as a reference surface, firstly installs various parts plates of the column bottom connecting component 15 at the tail part of the channel steel 11 in a line drawing and positioning mode, and sequentially fixes the parts plates by spot welding;
(6) an operator uses a web plate of the channel steel 11 as a reference surface, moves the H-shaped steel 12 to be parallel to the channel steel 11 from the head end of the channel steel 11, aligns the position of a column bottom plate of the channel steel 11 with the position of a column bottom plate of the H-shaped steel 12 in the direction vertical to the length of the I-shaped steel platform 1, firstly installs various partition plates and rib plates of a top pointed beam 13 system structure of the latticed steel column in a line drawing positioning mode, and completes the process of spot welding and fixing between the top pointed beam 13 and the channel steel 11, wherein the H-shaped steel 12 is not completely drawn close to and spot welded with the top pointed beam 13;
(7) an operator takes a web plate of the channel steel 11 as a reference surface, and after the assembly of the top sharp beam 13 of the lattice steel column is completed, various rib plates and partition plates of system structures such as a rear support sharp beam 16 and a bracket sharp beam 20 are sequentially assembled in the same way along the linear direction from the top of the column to the bottom of the column, and at the moment, each sharp beam structure is only spot-welded with the channel steel 11, and the H-shaped steel 12 is not completely drawn close to or spot-welded with the channel steel;
during specific implementation, when various rib plates and partition plates are installed, if collision to the top of the web plate occurs in the process of transferring various rib plates and partition plates from top to bottom, even if deformation influence is small due to the drawing effect of the turnbuckle 10, deformation of the web plate or flange can be corrected by utilizing a simple knocking mode after local flame heating, and the assembling quality of the lattice steel column is not influenced;
(9) an operator takes a web plate of the channel steel 11 as a reference surface, after the assembly of each sharp beam part is completed, the H-shaped steel 12 and each rib plate partition plate are fixed by spot welding, and finally, a column top plate at the top of the lower column is fixed by spot welding;
(10) the operator then completes the installation of each bracing connecting assembly 14 in sequence along the straight line direction from the top of the column to the bottom of the column, and fixes the same by spot welding;
(11) then, an operator rotates the baskets of the plurality of turnbuckles 10 anticlockwise, the acetylene flame is used for melting connection points of the plurality of turnbuckles 10, the channel steel 11 and the I-shaped steel platform 1, and after the plurality of turnbuckles 10 are removed, a plurality of brackets positioned at two sides of the H-shaped steel 12 and the channel steel 11 are installed step by step;
(12) finally, the assembled lower column structure is moved to a welding working section, and the welding of the lower column structure is completed according to the existing welding process and the welding sequence;
3. the upper column and the lower column which are welded respectively are connected, and the steel column has the characteristics and advantages that: the crane beam backing plate 23 at the top of the H-shaped steel 12 serving as a main structure is the installation position of the main crane beam, and the H-shaped steel 12 is of a symmetrical structure, so that the stability is high, and the maximum load of the main crane beam can be ensured; the top of the channel steel 11 is the small head of the H-shaped steel 12 of the upper column, the right end of the straight section web plate 4 of the upper column is a straight-line vertical straight section right flange 3 and is connected with the web plate upper end extending surface of the channel steel 11 of the lower column, after the bent section web plate 6 of the upper column is connected with the roof beam, the small head of the H-shaped steel 12 of the upper column is used for giving one side of the channel steel 11 of the lower column, a tensile stress inclining leftwards is applied, therefore, the tensile stress is applied to the web plate of the channel steel 11, in view of the asymmetric structure of the channel steel 11, only the web plate of the channel steel 11 is used as a supporting structure outside the channel steel 11, the plasticity and the toughness of the small head are obviously superior to one side of the H-shaped steel 12, therefore, one side of the channel steel 11 can effectively bear the tensile stress after the upper column is connected with the roof beam, and the structural stability after the steel column is put into use is ensured; regard as main part bearing structure with H shaped steel 12 and channel-section steel 11, the system that is connected by sharp girder construction such as top sharp roof beam 13 and bracing coupling assembling 14 between the two will effectively promote the structural strength of steel column.
4. The roof girder bracket 19 on the right side of the top of the lower column can be connected with the roof girder with lower height of the right-span workshop, the right-span bracket 18 on the channel steel 11 can bear the crane girder of the right-span workshop, the left-span bracket 17 in the middle of the H-shaped steel 12 can bear the secondary crane girder of the left-span workshop, and the crane girder can be used by hoisting equipment. The left side at 6 tops of curved section web of upper prop will be connected the roof girder of factory building is striden to a left side, and the upper prop bracket 9 that is located the upper prop middle part will be connected with the top of the main crane roof beam that the lower prop bore to improve the structural stability after whole lattice steel column comes into operation. Two small brackets are arranged in the middle of the lower column, and the load of the left span bracket 17 of the H-shaped steel 12 is larger than that of the right span bracket 18 of the channel steel 11 because the former has longer welding seam length and higher connection strength. The walkway plates can be laid on the two manhole tip beams 21 arranged in the middle of the lower column, the manholes 22 are formed above the two manhole tip beams 21, and personnel can pass through the steel column manholes 22 to walk when the workshop is used.
Finally, the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered in the claims of the present invention.
Claims (10)
1. The utility model provides a lattice steel column that is used for not high multispan factory building, its characterized in that: the roof beam bracket is arranged at the top end of the lower column in a protruding mode from the right side in the transverse direction, and is used for being connected with a roof beam of a right-span workshop; the top of lower prop is equipped with crane beam backing plate, crane beam backing plate is used for placing the main crane roof beam of left-hand span factory building, the bottom of upper prop is located between crane beam backing plate and the roof beam bracket.
2. The lattice steel column for unequal-height multi-span plants according to claim 1, wherein: the middle part of lower prop height direction is equipped with left side and strides the bracket, left side is striden the bracket and is located the horizontal left side of lower prop, left side is striden the bracket and is used for placing the inferior crane beam of left side span factory building.
3. The lattice steel column for unequal-height multi-span plants according to claim 2, wherein: the middle part of lower prop height direction is equipped with the bracket of striding on the right side, the bracket is located the horizontal right side of lower prop on the right side, the bracket is used for placing the crane beam of factory building on the right side strides on the right side.
4. The lattice steel column for unequal-height multi-span plants according to claim 3, wherein: the left-span bracket and the right-span bracket are arranged in a staggered mode in the height direction.
5. The lattice steel column for unequal-height multi-span plants according to claim 4, wherein: the lower column is fixed on the bottom surface through the column bottom connecting component.
6. The lattice steel column for unequal-height multi-span plants according to claim 5, wherein: the upper column comprises a straight section web, a bent section web, an inner side flange and an outer side flange, the straight section web is connected with the bent section web and the lower column, the inner side flange comprises a straight section left flange covering the straight section web transversely leftwards and a straight section right flange covering the straight section web transversely rightwards, and the outer side flange comprises an upper flange covering the bent section web in the height direction of the bent section web and a bent section flange covering the bent section web in the height direction of the bent section web.
7. The lattice steel column for unequal-height multi-span plants according to claim 6, wherein: the upper flange is vertically connected with the straight section right flange.
8. The lattice steel column for unequal-height multi-span plants according to claim 7, wherein: the lower column comprises H-shaped steel arranged at the transverse left end and channel steel arranged at the transverse right end; a plurality of reinforcing structures are arranged between the H-shaped steel and the channel steel.
9. The lattice steel column for unequal-height multi-span plants according to claim 8, wherein: h shaped steel and channel-section steel pass through a plurality of additional strengthening to separate into a plurality of manhole.
10. The method for assembling lattice steel columns for unequal-height multi-span plants according to any one of claims 1 to 9 is characterized in that: the method comprises the following steps:
s1, correspondingly assembling an upper column and a lower column respectively;
s2, correspondingly assembling the upper column and the lower column into a latticed steel column whole;
the manufacturing process of the upper column in the step S1 mainly comprises bending the arc-shaped flanges, assembling the web plates with the upper flange, the lower flange and the upper flange, and completing welding; the manufacturing process of the lower column comprises the steps of taking a web plate of channel steel as a datum plane, after H-shaped steel is placed in an aligned mode, firstly installing a part plate of the column bottom connecting assembly, then gradually installing each pointed beam structure, various supports and brackets from the top of the column to the bottom of the column, and after the lower column is assembled, gradually completing welding of welding seams.
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