CN113216645A - Construction method of cold-bending type large-span steel rib structural frame - Google Patents
Construction method of cold-bending type large-span steel rib structural frame Download PDFInfo
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- CN113216645A CN113216645A CN202110606677.XA CN202110606677A CN113216645A CN 113216645 A CN113216645 A CN 113216645A CN 202110606677 A CN202110606677 A CN 202110606677A CN 113216645 A CN113216645 A CN 113216645A
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/14—Conveying or assembling building elements
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- 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
- E04B1/38—Connections for building structures in general
- E04B1/58—Connections for building structures in general of bar-shaped building elements
- E04B1/5806—Connections for building structures in general of bar-shaped building elements with a cross-section having an open profile
- E04B1/5812—Connections for building structures in general of bar-shaped building elements with a cross-section having an open profile of substantially I - or H - form
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/14—Conveying or assembling building elements
- E04G21/16—Tools or apparatus
- E04G21/162—Handles to carry construction blocks
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- 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
- E04B2001/2406—Connection nodes
Abstract
A construction method of a cold-bending type large-span steel skeleton structure frame comprises the following steps: the method comprises the following steps: installation of the large-span steel beam: get a plurality of sections H shaped steel, install half of two leaf spring support piece in the both sides slot cavity of one of them H shaped steel respectively earlier, leaf spring support piece's center is adjusted well with the terminal surface of H shaped steel, then overlaps the cuff in the H shaped steel outside, step two: and (3) mounting the large-span steel rib structural frame: firstly hoisting a first group of H-shaped steel columns on two sides by using a truck crane, hoisting a first group of large-span steel beams after taking place, fixing the first group of large-span steel beams by using a steel wire rope without unhooking the crane after taking place, and welding and fixing the first group of H-shaped steel columns and the first group of large-span steel beams; the torsion resistance and the tensile resistance are enhanced, and the steel skeleton structure frame has good integral consistency and good stability; the large-span steel beam structure can meet the requirement of large span, can ensure the integral consistency of the large-span steel beam, ensures the structural strength and the bearing capacity, and reduces the quality problem and the safety problem in the construction process.
Description
The technical field is as follows:
the invention relates to a construction method of a cold-bending type large-span steel skeleton structure.
Background art:
at present, the labor cost of China is higher and higher, the price of sandstone materials is also high for a long time, and the rapid development of cold-formed steel structures is urgent. The cold-bending steel refers to finished steel products with various cross-section shapes, which are formed by bending steel plates or strip steel in a cold state, and has the characteristics of light dead weight, relatively large bearing capacity, good extensibility, good factory manufacturing and processing and assembling performance and the like, can express elements of the building elevation in multiple aspects, and saves the labor and the time limit on the whole. However, in the concrete construction process, for example, some large-span steel skeleton structure frames with large span need to use a large-span steel skeleton structure beam, two ends of which are supported by steel columns, the maximum span is about 30 meters, a single steel beam cannot be transported due to overlong length and is difficult to be turned around due to the limitation of the construction site, so that the large-span steel skeleton structure frame generally needs to be formed by connecting several steel beams to meet the span requirement, but the integral consistency of the split-connected steel beams is poor, and the structural strength and the bearing capacity are difficult to ensure.
In summary, how to improve the overall consistency, structural strength and bearing capacity of the large-span steel skeleton structure becomes a technical problem to be solved urgently in the industry.
The invention content is as follows:
in order to make up for the defects of the prior art, the invention provides a construction method of a cold-bending type large-span steel rib structure frame, which solves the problems of unreasonable assembly form, poor overall consistency and poor stability of the conventional large-span steel rib structure frame, ensures the structural strength and the bearing capacity, and reduces the quality problem and the safety problem in the construction process.
The technical scheme adopted by the invention for solving the technical problems is as follows:
a construction method of a cold-bending type large-span steel skeleton structure frame comprises the following steps:
the method comprises the following steps: installation of the large-span steel beam: taking a plurality of sections of H-shaped steel, firstly, respectively installing half parts of two plate spring supporting pieces in two side groove cavities of one H-shaped steel, aligning the centers of the plate spring supporting pieces with the end surfaces of the H-shaped steel, then the hoop is sleeved outside the H-shaped steel, the hoop is fixedly connected with a top plate and a bottom plate of the H-shaped steel respectively through a plurality of bolts, and then the two positioning bolts respectively penetrate through side plates of the hoop to be fixedly connected with positioning nuts of the two plate spring supporting pieces to fix the plate spring supporting pieces, then inserting another H-shaped steel into the hoop, respectively installing the other half of the two plate spring supporting pieces into the groove cavities on the two sides of the other H-shaped steel, butting the end parts of the two H-shaped steels, respectively and fixedly connecting the hoop with the top plate and the bottom plate of the other H-shaped steel through a plurality of bolts to complete the connection of the two H-shaped steels, and sequentially connecting the H-shaped steels by repeating the operation to form a large-span steel beam;
step two: and (3) mounting the large-span steel rib structural frame: firstly hoisting a first group of H-shaped steel columns on two sides by using a truck crane, hoisting a first group of large-span steel beams after taking place, fixing the first group of large-span steel beams by using a steel wire rope without unhooking the crane after taking place, and welding and fixing the first group of H-shaped steel columns and the first group of large-span steel beams; hoisting a second group of H-shaped steel columns on two sides through a truck crane, hoisting a second group of large-span steel beams after the second group of H-shaped steel columns are in place, welding and fixing the second group of H-shaped steel columns and the second group of large-span steel beams, and arranging the seams of the H-shaped steel in the first group of large-span steel beams and the second group of large-span steel beams in a staggered manner; after the crane is in place, the crane is not unhooked, an upper supporting beam is arranged between a first group of large-span steel beams and a second group of large-span steel beams, a side supporting beam is arranged between the first group of H-shaped steel columns and the second group of two H-shaped steel beams, two ends of the upper supporting beam are respectively connected with a hoop at the joint of the H-shaped steel of the first group of large-span steel beams and the H-shaped steel of the second group of large-span steel beams in a welding mode, two ends of the side supporting beam are respectively connected with the first group of two H-shaped steel columns and the second group of two H-shaped steel columns in a welding mode, and the operation is repeated to sequentially connect the groups to form the large-span steel skeleton structure.
The H-shaped steel plate is characterized in that two adjacent sections of H-shaped steel are connected through a hoop, plate spring supporting pieces are arranged in groove cavities on two sides of the joint of the two sections of H-shaped steel respectively, the plate spring supporting pieces are arranged in an arc-shaped downward bending mode from the center to two sides, the center of each plate spring supporting piece is coplanar with the joints of the two sections of H-shaped steel, the center top of each plate spring supporting piece is in contact with the top plate of the H-shaped steel, the bottoms of two ends of each plate spring supporting piece are in contact with the bottom plate of the H-shaped steel, and the plate spring supporting pieces are fixed through positioning bolts installed on the hoops.
The hoop comprises a square steel sleeve sleeved on the outer side of the joint of the two sections of H-shaped steel, the top of the square steel sleeve is fixedly connected with the top plate of the H-shaped steel through a plurality of bolts, and the bottom of the square steel sleeve is fixedly connected with the bottom plate of the H-shaped steel through a plurality of bolts.
The plate spring support piece comprises a plurality of elastic arc-shaped steel plates which are stacked together, the middle parts of the elastic arc-shaped steel plates are fixedly connected through a pin shaft, and the two sides of the elastic arc-shaped steel plates are fixedly connected through binding steel rings.
The lengths of the elastic arc-shaped steel plates are sequentially increased from top to bottom.
And arc-shaped curled edges are arranged at two ends of the elastic arc-shaped steel plate at the lowest part and are in contact with the bottom plate of the H-shaped steel.
And the middle part of the elastic arc-shaped steel plate at the lowest part is welded with a positioning nut, and the positioning bolt penetrates through the side plate of the hoop and is fixedly connected with the positioning nut.
The leaf spring support has a length greater than a length of the ferrule.
By adopting the scheme, the invention has the following advantages:
the joints of the H-shaped steel in two adjacent large-span steel beams are arranged in a staggered manner, so that the torsion resistance and the tensile resistance are enhanced, the joint of the H-shaped steel of one large-span steel beam is connected with the H-shaped steel of the other adjacent large-span steel beam in a welding manner through the upper supporting beam, the two adjacent H-shaped steel columns are connected in a welding manner through the side supporting beams, and the steel skeleton structure is good in overall consistency and stability; a plurality of sections of H-shaped steel are connected into a whole through the hoops in the large-span steel beam, the plate spring supporting pieces are respectively arranged in the groove cavities on the two sides of the joint of the two sections of H-shaped steel, the joint of the two sections of H-shaped steel can be elastically supported, the connecting strength of the joint of the two sections of H-shaped steel is greatly increased, downward bending and settlement of the joint of the two sections of H-shaped steel are avoided, the large-span requirement can be met, the integral consistency of the large-span steel beam can be guaranteed, the structural strength and the bearing capacity are guaranteed, and the quality problem and the safety problem in the construction process are reduced.
Description of the drawings:
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic top view of the present invention.
FIG. 3 is a schematic side view of the present invention.
Fig. 4 is a schematic main sectional view of the ferrule and leaf spring support portion of fig. 3.
Fig. 5 is a schematic left sectional view of the ferrule and leaf spring support portion of fig. 3.
In the figure, 1, H-shaped steel, 2, a hoop, 3, a plate spring supporting piece, 4, an elastic arc-shaped steel plate, 5, a pin shaft, 6, a binding steel ring, 7, an arc-shaped turned edge, 8, a positioning nut, 9, a positioning bolt, 10, a large-span steel beam, 11, an H-shaped steel column, 12, a connecting piece, 13, an upper supporting beam, 14 and a side supporting beam.
The specific implementation mode is as follows:
in order to clearly explain the technical features of the present invention, the following detailed description of the present invention is provided with reference to the accompanying drawings.
As shown in fig. 1-5, a construction method of a cold bending type large-span steel skeleton structure comprises the following steps:
the method comprises the following steps: installation of the large-span steel beam: taking a plurality of sections of H-shaped steel 1, firstly respectively installing half parts of two plate spring supporting pieces 3 in two side groove cavities of one H-shaped steel 1, aligning the center of the plate spring supporting piece 3 with the end face of the H-shaped steel 1, then sleeving a hoop 2 on the outer side of the H-shaped steel 1, fixedly connecting the hoop 2 with a top plate and a bottom plate of the H-shaped steel 1 through a plurality of bolts respectively, fixedly connecting the two positioning bolts 9 with positioning nuts 8 of the two plate spring supporting pieces 3 through side plates of the hoop 2 respectively, fixing the plate spring supporting piece 3, then inserting the other H-shaped steel 1 into the hoop 2, respectively installing the other half parts of the two plate spring supporting pieces 3 in two side groove cavities of the other H-shaped steel 1, butting the end parts of the two H-shaped steels 1, fixedly connecting the hoop 2 with the top plate and the bottom plate of the other H-shaped steel 1 through a plurality of bolts respectively, completing the connection of the two H-shaped steels 1, and sequentially connecting a plurality of H-shaped steels by repeating the operations, forming a large-span steel beam 10;
step two: and (3) mounting the large-span steel rib structural frame: firstly hoisting a first group of H-shaped steel columns 11 on two sides by using a truck crane, hoisting a first group of large-span steel beams 10 after taking place, fixing the first group of large-span steel beams 10 by using a steel wire rope without unhooking a crane after taking place, and welding and fixing the first group of H-shaped steel columns 11 and the first group of large-span steel beams 10; then hoisting a second group of H-shaped steel columns 11 at two sides by using a truck crane, hoisting a second group of large-span steel beams 10 after the second group of H-shaped steel columns 11 are in place, welding and fixing the second group of H-shaped steel columns 11 and the second group of large-span steel beams 10, and arranging the seams of the H-shaped steel 1 in the first group of large-span steel beams 10 and the seams of the second group of large-span steel beams 10 in a staggered manner; after the crane is in place, the crane is not unhooked, an upper supporting beam 13 is arranged between a first group of large-span steel beams 10 and a second group of large-span steel beams 10, a side supporting beam 14 is arranged between a first group of H-shaped steel columns 11 and a second group of H-shaped steel beams 11, two ends of the upper supporting beam 13 are respectively connected with a hoop at the H-shaped steel joint of the first group of large-span steel beams and H-shaped steel of the second group of large-span steel beams in a welding mode, two ends of the side supporting beam 14 are respectively connected with the first group of H-shaped steel columns and the second group of H-shaped steel columns in a welding mode, and the operation is repeated to sequentially connect multiple groups to form the large-span steel skeleton.
The large-span steel skeleton structure frame that forms includes a plurality of large-span girder steels 10 of parallel arrangement, the both ends of every large-span girder steel 10 support through H shaped steel post 11 respectively, every large-span girder steel 10 forms through connecting piece 12 is connected at the seam crossing through a plurality of sections H shaped steel 1 respectively, H shaped steel 1's seam crisscross setting each other in two adjacent large-span girder steels 10, the antitorque has been strengthened, tensile strength, be equipped with support beam 13 between the seam crossing of one of them large-span girder steel 10's H shaped steel 1 and the H shaped steel 1 of another adjacent large-span girder steel 10, be equipped with collateral branch supporting beam 14 between two adjacent H shaped steel posts 11. The two ends of the upper supporting beam 13 are respectively connected with the connecting piece 12 at the joint of the H-shaped steel 1 of one large-span steel beam 10 and the H-shaped steel 1 of the other large-span steel beam 10 in a welding mode, the two ends of the side supporting beams 14 are respectively connected with the two H-shaped steel columns 11 in a welding mode, and the formed steel skeleton structural frame is good in overall consistency and stability.
Connecting piece 12 establishes the cuff 2 in the adjacent two sections 1 seam crossing outsides of H shaped steel including fixed cover, and the both sides slot cavity of two sections 1 seam crossings of H shaped steel is equipped with leaf spring support piece 3 respectively, leaf spring support piece 3 is the arc downwarping setting by the center to both sides, and leaf spring support piece 3's center and two sections 1 seam coplanarity of H shaped steel, leaf spring support piece 3's center top and H shaped steel 1's roof contact, leaf spring support piece 3's both ends bottom and H shaped steel 1's bottom plate contact, and leaf spring support piece 3 fixes through installing positioning bolt 9 on cuff 2. The plate spring supporting piece 3 can elastically support the joint of the two sections of H-shaped steel 1, so that the joint of the two sections of H-shaped steel 1 is prevented from being bent downwards and settled, the requirement of large span is met, and the structural strength and the bearing capacity are ensured.
The hoop 2 comprises a square steel sleeve sleeved on the outer side of the joint of the two sections of H-shaped steel 1, the top of the square steel sleeve is fixedly connected with the top plate of the H-shaped steel through a plurality of bolts, and the bottom of the square steel sleeve is fixedly connected with the bottom plate of the H-shaped steel through a plurality of bolts. The hoop 2 is sleeved on the outer side of the joint of the two sections of H-shaped steel, the hoop is fixedly connected with the H-shaped steel through a plurality of bolts, and the two sections of H-shaped steel are connected into a whole outside, so that the connection strength of the joint of the two sections of H-shaped steel is greatly increased, and the overall consistency of the large-span steel beam is ensured.
The plate spring support piece 3 comprises a plurality of elastic arc-shaped steel plates 4 which are stacked together, the middle parts of the elastic arc-shaped steel plates 4 are fixedly connected through a pin shaft 5, the two sides of the elastic arc-shaped steel plates 4 are fixedly connected through a binding steel ring 6, and the elastic arc-shaped steel plates 4 are connected into a whole through the pin shaft 5 and the binding steel ring 6. When the joint of the two sections of H-shaped 1 steel is bent downwards for settlement, the plate spring supporting piece 3 can play a role in reverse supporting force so as to avoid the downward bending settlement of the joint, and the structural strength and the bearing capacity are ensured.
The lengths of the elastic arc-shaped steel plates 4 are sequentially increased from top to bottom, and the elastic supporting capacity can be superposed.
And arc-shaped curled edges 7 are arranged at two ends of the elastic arc-shaped steel plate 4 at the lowest part, and the arc-shaped curled edges 7 are in contact with the bottom plate of the H-shaped steel 1, so that the contact area can be increased.
The middle welding of the elastic arc-shaped steel plate 4 of the lowest side has a positioning nut 8, and a positioning bolt 9 penetrates through a side plate of the hoop 2 to be fixedly connected with the positioning nut 8, so that the plate spring supporting piece 3 is fixed, and the plate spring supporting piece 3 is prevented from displacing in a groove cavity of the H-shaped steel 1.
The length of the plate spring supporting piece 3 is larger than that of the hoop 2, so that the elastic supporting effect can be enhanced, and the joint of the two sections of H-shaped steel can be elastically supported better.
The working principle is as follows:
during construction, the installation of the large-span steel beam 10 is firstly completed on the ground: half of two plate spring support pieces 3 can be installed in the two side groove cavities of one of them H shaped steel 1 respectively earlier, plate spring support piece 3's center is adjusted well with H shaped steel 1's terminal surface, then overlap cuff 2 in the H shaped steel 1 outside, link firmly cuff 2 and H shaped steel 1's roof and bottom plate respectively through a plurality of bolt, rethread two positioning bolt 9 pass the curb plate of cuff 2 respectively and link firmly with two plate spring support piece 3's set nut 8, it is fixed with plate spring support piece 3, then insert another H shaped steel 1 in cuff 2 again, two half of two plate spring support piece 3 install respectively in the two side groove cavities of another H shaped steel 1, the tip butt joint of two H shaped steel 1, rethread a plurality of bolt links firmly cuff 2 and another H shaped steel 1's roof and bottom plate respectively, accomplish the connection of two H shaped steel 1. Then, a plurality of pieces of H-shaped steel 1 are sequentially connected to form a large-span steel beam 10 with the length of dozens of meters.
Then the installation of the steel skeleton structural frame is completed: firstly hoisting H-shaped steel columns 11 on the left two sides in the drawing 1 by using a truck crane, hoisting a left large-span steel beam 10 after taking place, fixing the left large-span steel beam 10 by using a steel wire rope without unhooking the crane after taking place, and welding and fixing the left H-shaped steel column 11 and the left large-span steel beam 10; then hoisting H-shaped steel columns 11 on the left two sides in the drawing 1 by using a truck crane, hoisting a left two large-span steel beam 10 after the steel columns are in place, welding and fixing the left two H-shaped steel columns 11 and the left two large-span steel beam 10, installing a support beam 13 between the left two large-span steel beams 10 without unhooking a crane after the steel columns are in place, installing a side support beam 14 between the left two H-shaped steel columns 11, welding and connecting two ends of the upper support beam 13 with a connecting piece 12 at the joint of the H-shaped steel 1 of the left one large-span steel beam 10 and the H-shaped steel 1 of the left two large-span steel beam 10 respectively, welding and connecting two ends of the side support beam 14 with the left two H-shaped steel columns 11 respectively, repeating the operations, and finishing the operations of the left three, the left four, the left five, the left six and the like according to the site construction condition, thereby forming a steel skeleton structure with good integral consistency and good stability.
The above-described embodiments should not be construed as limiting the scope of the invention, and any alternative modifications or alterations to the embodiments of the present invention will be apparent to those skilled in the art.
The present invention is not described in detail, but is known to those skilled in the art.
Claims (8)
1. A construction method of a cold-bending type large-span steel rib structure frame is characterized by comprising the following steps: the method comprises the following steps:
the method comprises the following steps: installation of the large-span steel beam: taking a plurality of sections of H-shaped steel, firstly, respectively installing half parts of two plate spring supporting pieces in two side groove cavities of one H-shaped steel, aligning the centers of the plate spring supporting pieces with the end surfaces of the H-shaped steel, then the hoop is sleeved outside the H-shaped steel, the hoop is fixedly connected with a top plate and a bottom plate of the H-shaped steel respectively through a plurality of bolts, and then the two positioning bolts respectively penetrate through side plates of the hoop to be fixedly connected with positioning nuts of the two plate spring supporting pieces to fix the plate spring supporting pieces, then inserting another H-shaped steel into the hoop, respectively installing the other half of the two plate spring supporting pieces into the groove cavities on the two sides of the other H-shaped steel, butting the end parts of the two H-shaped steels, respectively and fixedly connecting the hoop with the top plate and the bottom plate of the other H-shaped steel through a plurality of bolts to complete the connection of the two H-shaped steels, and sequentially connecting the H-shaped steels by repeating the operation to form a large-span steel beam;
step two: and (3) mounting the large-span steel rib structural frame: firstly hoisting a first group of H-shaped steel columns on two sides by using a truck crane, hoisting a first group of large-span steel beams after taking place, fixing the first group of large-span steel beams by using a steel wire rope without unhooking the crane after taking place, and welding and fixing the first group of H-shaped steel columns and the first group of large-span steel beams; hoisting a second group of H-shaped steel columns on two sides through a truck crane, hoisting a second group of large-span steel beams after the second group of H-shaped steel columns are in place, welding and fixing the second group of H-shaped steel columns and the second group of large-span steel beams, and arranging the seams of the H-shaped steel in the first group of large-span steel beams and the second group of large-span steel beams in a staggered manner; after the crane is in place, the crane is not unhooked, an upper supporting beam is arranged between a first group of large-span steel beams and a second group of large-span steel beams, a side supporting beam is arranged between the first group of H-shaped steel columns and the second group of two H-shaped steel beams, two ends of the upper supporting beam are respectively connected with a hoop at the joint of the H-shaped steel of the first group of large-span steel beams and the H-shaped steel of the second group of large-span steel beams in a welding mode, two ends of the side supporting beam are respectively connected with the first group of two H-shaped steel columns and the second group of two H-shaped steel columns in a welding mode, and the operation is repeated to sequentially connect the groups to form the large-span steel skeleton structure.
2. The construction method of the cold bending type large-span steel skeleton structure frame according to claim 1, characterized in that: the H-shaped steel plate is characterized in that two adjacent sections of H-shaped steel are connected through a hoop, plate spring supporting pieces are arranged in groove cavities on two sides of the joint of the two sections of H-shaped steel respectively, the plate spring supporting pieces are arranged in an arc-shaped downward bending mode from the center to two sides, the center of each plate spring supporting piece is coplanar with the joints of the two sections of H-shaped steel, the center top of each plate spring supporting piece is in contact with the top plate of the H-shaped steel, the bottoms of two ends of each plate spring supporting piece are in contact with the bottom plate of the H-shaped steel, and the plate spring supporting pieces are fixed through positioning bolts installed on the hoops.
3. The construction method of the cold bending type large-span steel skeleton structure frame according to claim 2, characterized in that: the hoop comprises a square steel sleeve sleeved on the outer side of the joint of the two sections of H-shaped steel, the top of the square steel sleeve is fixedly connected with the top plate of the H-shaped steel through a plurality of bolts, and the bottom of the square steel sleeve is fixedly connected with the bottom plate of the H-shaped steel through a plurality of bolts.
4. The construction method of the cold bending type large-span steel skeleton structure frame according to claim 2, characterized in that: the plate spring support piece comprises a plurality of elastic arc-shaped steel plates which are stacked together, the middle parts of the elastic arc-shaped steel plates are fixedly connected through a pin shaft, and the two sides of the elastic arc-shaped steel plates are fixedly connected through binding steel rings.
5. The construction method of the cold bending type large-span steel skeleton structure frame as claimed in claim 4, wherein the construction method comprises the following steps: the lengths of the elastic arc-shaped steel plates are sequentially increased from top to bottom.
6. The construction method of the cold bending type large-span steel skeleton structure frame according to claim 5, characterized in that: and arc-shaped curled edges are arranged at two ends of the elastic arc-shaped steel plate at the lowest part and are in contact with the bottom plate of the H-shaped steel.
7. The construction method of the cold bending type large-span steel skeleton structure frame according to claim 5, characterized in that: and the middle part of the elastic arc-shaped steel plate at the lowest part is welded with a positioning nut, and the positioning bolt penetrates through the side plate of the hoop and is fixedly connected with the positioning nut.
8. The construction method of the cold bending type large-span steel skeleton structure frame according to claim 2, characterized in that: the leaf spring support has a length greater than a length of the ferrule.
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