CN108952207B - Steel structure building storey adding structure and storey adding method - Google Patents
Steel structure building storey adding structure and storey adding method Download PDFInfo
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- CN108952207B CN108952207B CN201811112371.3A CN201811112371A CN108952207B CN 108952207 B CN108952207 B CN 108952207B CN 201811112371 A CN201811112371 A CN 201811112371A CN 108952207 B CN108952207 B CN 108952207B
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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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Abstract
The invention provides a storey adding structure and a storey adding method of a steel structure building, and belongs to the field of building construction. The invention relates to a storey-adding structure of a steel structure building, which comprises a pipe frame column, a supporting part, a lifting column, a lifting beam, an electric hoist, a steel roof truss, a steel scale rod and a steel column. The supporting component is fixed at the top of the pipe frame column, one ends of the two lifting columns are welded on the top surface of the supporting component respectively, and the other ends of the two lifting columns penetrate through the top surface of the steel roof truss respectively and are welded with two ends of the lifting beam. The lifting column is coaxial with the upright column, the upper end of the lifting column penetrates through the hole for the lifting column to penetrate through, and the lifting column plays a limiting role on the roof during lifting, so that the precision of lifting operation is high, the alignment and installation of the subsequent newly-added upright column are convenient, a great amount of labor cost and mechanical work cost can be saved, the construction progress is accelerated, and the construction safety is improved.
Description
Technical Field
The invention belongs to the field of building construction, and particularly relates to a storey adding structure and a storey adding method of a steel structure building.
Background
In common energy expansion transformation engineering, the pipe frames in the original pipe gallery are paved with process pipelines, and the pipelines added after the energy expansion transformation are paved in the original pipe gallery without positions. For this purpose, the original pipe frame needs to be increased by one layer, and the increased process pipeline after the energy expansion transformation is arranged on the increased layer height. However, in the steel structure building, the original steel structure roof system is arranged at the top of the pipe gallery, so that the steel structure roof at the top of the pipe gallery is required to be removed firstly, then the pipe rack is lifted, and the steel structure roof is restored after the pipe rack is lifted. Typically, the construction steps taken to raise such a pipe rack are: removing roof tiles, removing steel purlines, removing steel supports and steel roof frames, installing added steel columns and steel beams (namely a layer of heightened pipe frames) on the column heads of the original pipe frames, recovering to install the steel roof frames and the roof frame supports, recovering to install the steel purlines and recovering to install the tile roofs.
The conventional construction method requires a large site for stacking the detached steel structure, may cause damage to part of components in the process of detachment, has a long construction period, and requires a great deal of labor cost and crane work cost.
Disclosure of Invention
The invention aims to provide a layer-adding structure and a layer-adding method of a steel structure building which do not need to be dismantled and can be integrally lifted.
The invention relates to a storey-adding structure of a steel structure building, which comprises a pipe frame column, a supporting part, lifting columns, lifting beams, an electric hoist, a steel roof truss, steel scale rods and steel columns, wherein the supporting part is fixed at the top of the pipe frame column; wherein, the liquid crystal display device comprises a liquid crystal display device,
when the top of the pipe frame column is not provided with a longitudinal pipe frame beam, the supporting part comprises a front hoop plate, a rear hoop plate, side hoop plates, bolts, angle steels and steel corbels, wherein the front hoop plate and the rear hoop plate are respectively clung to the front surface and the rear surface of the pipe frame column, the equal-height positions of the outer sides of the front hoop plate and the rear hoop plate are welded with horizontal angle steels, the front angle steels and the rear angle steels are fastened through a group of bolts perpendicular to the front angle steels and the rear angle steels, the side hoop plates are welded between the front hoop plate and the rear hoop plate and clung to the two side surfaces of the pipe frame column, the steel corbels are welded on the side hoop plates, and the lifting column is welded on the steel corbels;
when there is vertical pipe frame roof beam at the top of pipe frame post, the supporting part includes crab-bolt, steel sheet, and the vertical pipe frame roof beam top surface of pipe frame post both sides adopts the crab-bolt to plant the muscle, and the steel sheet passes through the crab-bolt to be fastened at the roof beam surface, promotes post welding on the steel sheet.
The storey adding structure of the steel structure building fully utilizes the upright posts and the cross beams of the original building structure, and the supporting structures of the lifting posts are supported on the original upright posts and/or the cross beams. The lifting column is coaxial with the upright post, the upper end of the lifting column penetrates through the hole for the lifting column to penetrate through, and the lifting column plays a limiting role on the roof during lifting, so that the precision of lifting operation is high, and the subsequent alignment and installation of the newly added upright post are convenient.
Further, a sleeve is vertically arranged at a hole, through which the lifting column passes, on the top surface of the steel roof truss, the sleeve is fixedly connected with the top surface of the steel roof truss, the lifting column passes through the sleeve, and the inner diameter of the sleeve is matched with the diameter of the lifting column.
The sleeve is arranged at the hole of the roof, and after the sleeve is fixed with the top surface of the steel roof truss, the lifting column can be well limited, the steel roof truss is prevented from horizontally shifting, the sliding of the lifting column in the hole is more stable, and the whole lifting operation is smoothly carried out.
Further, the steel corbel comprises a horizontal panel and a vertical plate, a groove is formed in the vertical plate, the vertical width of the groove is equal to the diameter of the bolt, the horizontal depth of the groove is equal to or greater than the diameter of the bolt, and the bolt penetrates through the groove and is clamped.
Further, two angle steels are welded on the front and rear hoop plates respectively, two bolts are arranged on the outer sides of the side hoop plates to fasten the angle steels respectively, an upper groove and a lower groove are arranged on the vertical plate of the steel corbel, and the two bolts on the outer sides of each side hoop plate penetrate through the upper groove and the lower groove respectively and are clamped.
The provision of one or two pairs of grooves in the riser of the steel corbel for the bolts 5 to pass through can increase the firmness of the whole support structure.
Further, a cable rope is arranged on the lifting beam, so that the construction safety is further ensured.
The invention also relates to a layer adding method of the steel structure building, which comprises the following steps:
when the top of the pipe rack column does not have a longitudinal pipe rack beam, arranging a supporting component at the top of the pipe rack column which needs to be heightened, wherein the mounting method of the supporting component comprises the following steps: firstly, welding angle steel at the same height position on one side of a front hoop plate and a rear hoop plate, tightly attaching the other side of the front hoop plate and the rear hoop plate to the front surface and the rear surface of a pipe frame column, and vertically penetrating the angle steel by bolts to fasten the front hoop plate and the rear hoop plate on the front surface and the rear surface of the pipe frame column; then installing side hoop plates between the front hoop plate and the rear hoop plate, tightly adhering the side hoop plates to two side surfaces of a pipe support column, firmly welding the front hoop plate and the rear hoop plate with the side hoop plates, clamping bolts with grooves on vertical plates of the steel corbels, and welding the steel corbels on the side hoop plates;
when a longitudinal pipe frame beam is arranged at the top of the pipe frame column, a supporting component is arranged on the top surface of the longitudinal pipe frame beam close to the pipe frame column, and the installation method of the supporting component comprises the following steps: the top surfaces of the longitudinal pipe support beams at two sides of the pipe support column are planted with ribs by adopting anchor bolts, and the steel plates are fastened on the top surfaces of the longitudinal pipe support beams by the anchor bolts;
step two, removing roof tiles of all steel roof trusses above the tops of the pipe frames and the columns needing to be heightened to form holes through which lifting columns can pass;
step three, taking two lifting columns to penetrate through a roof opening of the steel roof truss, respectively welding one ends of the two lifting columns on steel corbels and/or steel plates, respectively welding the other ends of the two lifting columns with two ends of a lifting beam, and thus completing the installation of a group of lifting columns; installing lifting columns at the tops of other pipe rack columns according to the same method; the height of the lifting column meets the installation height of the steel column after the steel roof truss is lifted;
welding a steel scale rod on a column head embedded part of the pipe support column to be heightened;
step five, a synchronous electric hoist with the same model and specification is hung in the middle of the lifting beam, so that the heights of all the electric hoist hook heads are the same as those of the steel scale rod; starting a unified button to enable the electric hoist to be lifted to a required height, checking whether all electric hoists are synchronous or not, and if not, immediately replacing until all electric hoists are synchronous;
step six, connecting each electric hoist with the steel roof truss through a steel wire rope;
step seven, a cable rope is selectively added on the lifting beam according to the lifting height of the steel roof truss;
step eight, the connection between the steel roof truss and the column head of the original pipe support column is removed, so that the steel roof truss is separated from the column head of the pipe support column;
step nine, after all the electric hoists are lifted singly to be in a stressed state, starting a unified button of all the electric hoists, slowly lifting the whole steel roof truss, and checking the synchronous lifting condition at any time through a steel scale rod during lifting until the installation height of the steel column is met;
step ten, mounting the steel columns on original pipe support column heads needing to be heightened, and mounting connecting beams among the steel columns;
step eleven, after all the steel columns and connecting beams are installed, the electric hoist can be started, the steel roof truss is slowly dropped down to be located on the newly added steel column, and the steel roof truss is firmly connected with the heightened steel column after the steel roof truss is checked without errors.
When the top surface of the original longitudinal pipe frame beam is provided with the embedded steel plate, the first step can be omitted, and the lifting column is directly welded on the embedded steel plate.
Further, in the second step, after removing the roof tile of the steel roof truss, vertically installing a sleeve matched with the inner diameter of the lifting column in the formed hole, fixedly connecting the sleeve with the top surface of the steel roof truss, and enabling the lifting column to pass through the sleeve; in the eleventh step, the sleeve is firstly removed, and then the steel roof truss is firmly connected with the heightened steel column.
Further, the steel corbel comprises a horizontal panel and a vertical plate, a groove is formed in the vertical plate, the vertical width of the groove is equal to the diameter of the bolt, the horizontal depth of the groove is equal to or greater than the diameter of the bolt, and the bolt penetrates through the groove and is clamped.
The steel structure building storey adding structure and the storey adding method can stably and accurately raise the whole roof system, the lifting height is large, the whole steel structure roof is stably dropped after the newly added steel columns are connected, the height raising task of the steel structure roof is quickly completed without dismantling, a large amount of labor cost and mechanical working cost are saved, the construction progress is accelerated, and the construction cost and the safety risk are reduced. The layer-adding structure and the layer-adding method of the steel structure building can be used for increasing the height of the pipe gallery and can also be used for other building engineering.
Drawings
Fig. 1 is a schematic structural view of the steel roof truss overall lifting process without the longitudinal tube frame beams at the top of the tube frame column.
Fig. 2 is a right side view of the steel roof truss system of fig. 1 after being lifted in its entirety.
Fig. 3 is a cross-sectional view taken along the A-A plane of fig. 2.
Fig. 4 is a schematic elevational view of a steel corbel.
Fig. 5 is a schematic side elevation view of a steel corbel.
Fig. 6 is a schematic structural view of the steel roof truss integral lifting process with a longitudinal tube frame beam at the top of the tube frame column.
Fig. 7 is a right side view of the roof truss system of fig. 6 after being lifted in its entirety.
Fig. 8 is a B-B side cross-sectional view of fig. 7.
In the figure: 1. a pipe rack column; 2. a transverse tube rack beam; 3. front and rear hoop plates; 4. angle steel; 5. a bolt; 6. a side hoop plate; 7. steel corbels; 71. a vertical plate; 72. a horizontal panel; 73. a groove; 8. lifting the column; 81. a sleeve; 9. lifting the beam; 10. an electric hoist; 11. a steel roof truss; 12. a steel scale rod; 13. a steel column; 14. a longitudinal tube rack beam; 15. an anchor bolt; 16. a steel plate; 17. a cable rope.
Detailed Description
Example 1
Fig. 1 is a schematic structural view of the whole lifting process of the steel roof truss of the embodiment. In this embodiment, only the transverse frame beams 2 are on top of the frame column 1, and no longitudinal frame beams 14 are present.
The steel structure building of this embodiment is the piping lane, and the layer structure that increases of piping lane includes pipe frame post 1, supporting part, lifting column 8, lifting beam 9, electric block 10, steel roof truss 11, steel scale pole 12, steel column 13.
As shown in fig. 1 to 3, the support member includes front and rear hoop plates 3, side hoop plates 6, bolts 5, angle steel 4, and steel corbels 7. The two front and back hoop plates 3 are respectively clung to the front and back surfaces at the top of the pipe frame column 1, two angle steels 4 are respectively welded horizontally at the outer sides of the front and back hoop plates 3, a pair of angle steels 4 which are opposite in front and back are fastened through two bolts 5 which are vertical to the angle steels, a side hoop plate 6 is welded between the front and back hoop plates 3 and clung to the two side surfaces of the pipe frame column 1, and steel corbels 7 are welded on the side hoop plate 6.
As shown in fig. 4 and 5, the steel corbel 7 is composed of a horizontal plate 72 and a vertical plate 71. The vertical plate 71 is provided with a groove 73, the vertical width of the groove 73 is equal to the diameter of the bolt 5, the horizontal depth of the groove 73 is larger than the diameter of the bolt 5, and the bolt 5 passes through the groove 73 and is clamped.
As shown in fig. 1 and 2, one ends of the two lifting columns 8 are welded to the top surface of the horizontal plate 72, respectively, and the other ends pass through the vertical sleeves 81 of the top surface of the steel roof truss 11 and are welded to both ends of the lifting beam 9, respectively. The inner diameter of the sleeve 81 matches the diameter of the lifting column 8. The middle part of the lifting beam 9 is hung with an electric hoist 10, and the electric hoist 10 is connected with a steel roof truss 11. The steel scale rod 12 is welded on one side of the top of the pipe support column 1, and the steel column 13 is welded on the top of the pipe support column 1 as an heightened steel column. The lifting beam 9 is provided with a guy rope 17.
Fig. 1 is a schematic view of the whole lifting process of a piping lane steel roof truss 11 according to the embodiment, wherein the broken line steel roof truss 11 is the height of the original pipe rack, and the solid line steel roof truss 11 is the height meeting the design requirement after lifting.
The working procedure of this embodiment is:
firstly, horizontally welding two angle steels 4 on one side of each of two front and rear hoop plates 3, then tightly attaching the other side of each of the front and rear hoop plates 3 to the front and rear surfaces of the top of a pipe support column 1, and fastening the front and rear hoop plates 3 on the front and rear surfaces of the pipe support column 1 by using two bolts 5 to penetrate through the angle steels 4; then installing a side hoop plate 6 between the front hoop plate 3 and the rear hoop plate 3, tightly adhering the side hoop plates 6 to the two sides of the pipe frame column 1, firmly welding the front hoop plate 3 and the rear hoop plate 3 with the side hoop plates 6, clamping the bolts 5 above the grooves 73 of the steel corbels 7, and welding the steel corbels 7 on the side hoop plates 6;
step two, removing roof tiles of the steel roof truss 11 above the top of the pipe support column 1 needing to be heightened to form a hole through which the lifting column 8 can pass, and installing a vertical sleeve 81 on the hole;
step three, taking two lifting columns 8, enabling the two lifting columns 8 to pass through a vertical sleeve 81 of a roof of a steel roof truss 11, respectively welding one ends of the two lifting columns 8 on a horizontal plane plate 72 of a steel corbel 7, and respectively welding the other ends of the two lifting columns 8 with two ends of a lifting beam 9; thereby completing the installation of a set of lifting columns 8; then installing lifting columns 8 at the tops of other pipe rack columns 1 according to the same method; the height of the lifting column 8 meets the installation height of a steel column 13 after the steel roof truss 11 is lifted;
welding a steel scale rod 12 on a column head embedded part of the pipe support column 1 needing to be heightened;
step five, hanging synchronous electric hoists 10 with the same model and specification in the middle of the lifting beam 9, so that the heights of all the hook heads of the electric hoists 10 are the same as those of the steel scale rod 12; after the unified button is started to enable the electric hoist 10 to be lifted to a required height, checking whether all the electric hoists 10 are synchronous or not, and if not, immediately replacing until all the electric hoists 10 are synchronous;
step six, connecting each electric hoist 10 with a steel roof truss 11 through a steel wire rope;
step seven, adding a cable rope on the lifting beam;
step eight, dismantling the connection between the steel roof truss 11 and the column head of the original pipe rack column 1 to separate the steel roof truss 11 from the column head of the pipe rack column 1;
step nine, after all the electric hoists 10 are singly lifted to be in a stressed state, starting a unified button of all the electric hoists 10, slowly lifting the whole steel roof truss 11, and checking the synchronous lifting condition at any time through the steel scale rod 12 during lifting until the installation height of the steel column 13 is met;
step ten, mounting the steel columns 13 on the column heads of the original pipe frame columns 1 needing to be heightened, and mounting connecting beams among the steel columns 13; step eleven, after all the steel columns 13 and connecting beams are installed, starting the electric hoist 10, slowly dropping the steel roof truss 11 to enable the steel roof truss 11 to be located on the newly added steel column 13, removing the sleeve 81, and firmly connecting the steel roof truss 11 with the heightened steel column 13 after checking.
Example 2
Fig. 6 to 8 are schematic structural views of the whole lifting process of the steel roof truss of the present embodiment.
The difference from embodiment 1 is that the top of the tube rack column 1 of this embodiment has a longitudinal tube rack beam 14. The purpose of the present embodiment is to support the lifting column 8 is a steel plate 16. The lifting column 8 supporting component of the embodiment comprises an anchor bolt 15 and a steel plate 16, wherein the top surface of a longitudinal pipe frame beam 14 which is close to two sides of a pipe frame column 1 is planted with ribs by the anchor bolt 15, the steel plate 16 is fastened on the top surface of the beam 14 by the anchor bolt 15, and the lifting column 8 is welded on the steel plate 16.
When the top surface of the original longitudinal pipe frame beam is provided with the embedded steel plate, the step of installing the steel plate 16 can be omitted, and the lifting column 8 is directly welded on the embedded steel plate.
While the preferred embodiments of the present invention have been described above, it will be understood by those skilled in the art that this is by way of example only and that the scope of the invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the principles and spirit of the invention, but such changes and modifications fall within the scope of the invention.
Claims (8)
1. The utility model provides a layer structure increases of steel construction building which characterized in that: the steel frame comprises a pipe frame column (1), supporting parts, lifting columns (8), lifting beams (9), electric hoists (10), steel roof trusses (11), steel scale rods (12) and steel columns (13), wherein the supporting parts are fixed at the top of the pipe frame column (1), one ends of the two lifting columns (8) are respectively welded on the top surface of the supporting parts, the other ends of the two lifting columns respectively penetrate through the top surface of the steel roof trusses (11) and are welded with the two ends of the lifting beams (9), the electric hoists (10) are hung in the middle of each lifting beam (9), the electric hoists (10) are connected with the steel roof trusses (11), the steel scale rods (12) are welded on one side of the top of the pipe frame column (1), and the steel columns (13) serving as heightened steel columns are welded at the top of the pipe frame column (1); wherein, the liquid crystal display device comprises a liquid crystal display device,
when a longitudinal pipe frame beam (14) is not arranged at the top of the pipe frame column (1), the supporting component comprises a front hoop plate (3), a rear hoop plate (6), bolts (5), angle steels (4) and steel corbels (7), the front hoop plate (3) and the rear hoop plate (3) are respectively clung to the front surface and the rear surface of the pipe frame column (1), horizontal angle steels (4) are welded at equal-height positions on the outer sides of the front hoop plate and the rear hoop plate (3), the front and the rear opposite angle steels (4) are fastened through a group of bolts (5) perpendicular to the front and the rear angle steels, the side hoop plates (6) are welded between the front and the rear hoop plates (3) and clung to the two side surfaces of the pipe frame column (1), the steel corbels (7) are welded on the side hoop plates (6), and the lifting column (8) is welded on the steel corbels;
when there is vertical pipe frame roof beam (14) in the top of pipe support post (1), the supporting part includes crab-bolt (15), steel sheet (16), and the longitudinal pipe frame roof beam (14) top surface of pipe support post (1) both sides adopts crab-bolt (15) to plant the muscle, and steel sheet (16) pass through crab-bolt (15) to be fastened at longitudinal pipe frame roof beam (14) top surface, promotes post (8) welding on steel sheet (16).
2. The added layer structure of a steel structure building according to claim 1, wherein: the steel roof truss is characterized in that a sleeve (81) is vertically arranged at a hole, through which the lifting column (8) passes, on the top surface of the steel roof truss (11), the sleeve (81) is fixedly connected with the top surface of the steel roof truss (11), the lifting column (8) passes through the sleeve (81), and the inner diameter of the sleeve (81) is matched with the diameter of the lifting column (8).
3. The added layer structure of a steel structure building according to claim 1, wherein: the steel corbel (7) consists of a horizontal plate (72) and a vertical plate (71), wherein a groove (73) is formed in the vertical plate (71), the vertical width of the groove (73) is equal to the diameter of the bolt (5), the horizontal depth of the groove (73) is equal to or greater than the diameter of the bolt (5), and the bolt (5) penetrates through the groove (73) and is clamped.
4. A layered structure of a steel structure building according to claim 3, characterized in that: two angle steels (4) are welded on the front hoop plate (3) and the rear hoop plate (3), two bolts (5) are arranged on the outer side of the side hoop plate (6) to fasten the angle steels (4), an upper groove (73) and a lower groove (73) are arranged on a vertical plate (71) of the steel bracket (7), and the two bolts (5) on the outer side of each side hoop plate (6) penetrate through the upper groove (73) and the lower groove (73) respectively and are clamped.
5. The added layer structure of a steel structure building according to claim 1, wherein: the lifting beam (9) is provided with a cable rope (17).
6. A layer adding method for a steel structure building is characterized by comprising the following steps of: the method comprises the following steps:
step one, when the top of a pipe support column (1) is not provided with a longitudinal pipe support beam (14), a supporting component is arranged at the top of the pipe support column (1) which needs to be heightened, and the mounting method of the supporting component is as follows: firstly, welding angle steel (4) at the same height position on one side of a front hoop plate and a rear hoop plate (3), tightly attaching the other side of the front hoop plate and the rear hoop plate to the front surface and the rear surface of a pipe support column (1), and fastening the front hoop plate and the rear hoop plate (3) on the front surface and the rear surface of the pipe support column (1) by using bolts (5) to penetrate through the angle steel (4); then installing side hoop plates (6) between the front hoop plate (3) and the rear hoop plate (3), tightly adhering the side hoop plates (6) to two sides of the pipe support column (1), firmly welding the front hoop plate (3) and the rear hoop plate (6), clamping bolts (5) with grooves (73) on a vertical plate (71) of a steel bracket (7), and welding the steel bracket (7) on the side hoop plates (6);
when the top of the pipe support column (1) is provided with a longitudinal pipe support beam (14), a supporting part is arranged on the top surface of the longitudinal pipe support beam (14) close to the pipe support column (1), and the installation method of the supporting part is as follows: the top surfaces of the longitudinal pipe frame beams (14) at two sides of the pipe frame column (1) are planted with ribs by adopting anchor bolts (15), and a steel plate (16) is fastened on the top surfaces of the longitudinal pipe frame beams (14) through the anchor bolts (15);
step two, removing roof tiles of the steel roof truss (11) above the top of the pipe support column (1) to be heightened to form a hole through which the lifting column (8) can pass;
step three, taking two lifting columns (8) to penetrate through a roof opening of a steel roof truss (11), respectively welding one ends of the two lifting columns (8) on a steel bracket (7) and/or a steel plate (16), and respectively welding the other ends of the two lifting columns (8) with two ends of a lifting beam (9); thereby completing the installation of a set of lifting columns (8); installing lifting columns (8) at the tops of other pipe rack columns (1) according to the same method; the height of the lifting column (8) meets the installation height of a steel column (13) after the steel roof truss (11) is lifted;
welding a steel scale rod (12) on a column head embedded part of the pipe support column (1) to be heightened;
step five, tying synchronous electric hoists (10) with the same model and the same specification in the middle of the lifting beam (9), so that the heights of all the hook heads of the electric hoists (10) are the same as the heights of the steel scale rods (12); starting a unified button to enable the electric hoist (10) to be lifted to a required height, checking whether all the electric hoists (10) are synchronous or not, and immediately replacing until all the electric hoists are synchronous if the electric hoists are asynchronous;
step six, connecting each electric hoist (10) with the steel roof truss (11) through a steel wire rope;
step seven, a cable rope is selectively added on the lifting beam according to the lifting height of the steel roof truss;
step eight, dismantling the connection between the steel roof truss (11) and the column head of the original pipe rack column (1) to separate the steel roof truss (11) from the column head of the pipe rack column (1);
step nine, after all the electric hoists (10) are lifted singly to be in a stressed state, starting a unified button of all the electric hoists (10), slowly lifting the whole steel roof truss (11), and checking the lifting synchronization condition at any time through the steel scale rod (12) during lifting until the mounting height of the steel column (13) is met;
step ten, mounting the steel columns (13) on the column heads of the original pipe frame columns (1) which need to be heightened, and mounting connecting beams among the steel columns (13);
step eleven, after all the steel columns (13) and the connecting beams are installed, the electric hoist (10) can be started, the steel roof truss (11) is slowly dropped down, the steel roof truss is located on the newly added steel column (13), and after the steel roof truss (11) is checked, the steel roof truss is firmly connected with the heightened steel column (13).
7. The method for adding layers to a steel structure building according to claim 6, wherein: in the second step, after removing roof tiles of the steel roof truss (11), vertically installing a sleeve (81) matched with the inner diameter of the lifting column (8) in a formed hole, fixedly connecting the sleeve (81) with the top surface of the steel roof truss (11), and enabling the lifting column (8) to pass through the sleeve (81); in the eleventh step, the sleeve is firstly removed, and then the steel roof truss (11) and the heightened steel column (13) are firmly connected.
8. The method for adding layers to a steel structure building according to claim 6, wherein: the steel corbel (7) consists of a horizontal plate (72) and a vertical plate (71), wherein a groove (73) is formed in the vertical plate (71), the vertical width of the groove (73) is equal to the diameter of the bolt (5), the horizontal depth of the groove (73) is equal to or greater than the diameter of the bolt (5), and the bolt (5) penetrates through the groove (73) and is clamped.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811112371.3A CN108952207B (en) | 2018-09-25 | 2018-09-25 | Steel structure building storey adding structure and storey adding method |
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| CN201811112371.3A CN108952207B (en) | 2018-09-25 | 2018-09-25 | Steel structure building storey adding structure and storey adding method |
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| CN108952207B true CN108952207B (en) | 2023-09-19 |
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| CN111877789B (en) * | 2020-07-01 | 2022-01-11 | 上海建工集团股份有限公司 | Construction method for integrally lifting, replacing and constructing new and old steel roof |
| CN111877790B (en) * | 2020-07-01 | 2021-11-09 | 上海建工集团股份有限公司 | Construction method for integrally jacking and replacing new and old steel roof |
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| JP2012132145A (en) * | 2010-12-19 | 2012-07-12 | Takenaka Komuten Co Ltd | Lifting device for building |
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| CN108952207A (en) | 2018-12-07 |
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