CN106906902B - Safe and stable steel structure building and construction process thereof - Google Patents
Safe and stable steel structure building and construction process thereof Download PDFInfo
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- CN106906902B CN106906902B CN201710173619.6A CN201710173619A CN106906902B CN 106906902 B CN106906902 B CN 106906902B CN 201710173619 A CN201710173619 A CN 201710173619A CN 106906902 B CN106906902 B CN 106906902B
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/24—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of metal
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/24—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of metal
- E04B1/2403—Connection details of the elongated load-supporting parts
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- 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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Abstract
The invention discloses a safe and stable steel structure building, which comprises a truss and a skylight, wherein the truss is composed of a left truss and a right truss, the left truss and the right truss are composed of a main truss, a secondary truss and a ring truss, a jig frame is arranged below the main truss, the secondary truss is arranged between the two main trusses, a connecting beam is arranged between the main trusses and on one side of the secondary truss, the outer side of the main truss is provided with an outer side main truss, the other end of the outer side main truss is connected through the ring truss, one end of the main truss, which is close to the ground, is fixed through an embedded part, a middle main steel truss and a middle secondary truss are arranged between the left truss and the right truss, and the skylight is arranged between the two middle main steel trusses, the mechanical requirement can be better satisfied, and the safety and the stability of its use are effectually guaranteed when guaranteeing heterotypic effect.
Description
Technical Field
The invention belongs to the field of steel structure manufacturing, and particularly relates to a safe and stable steel structure building and a construction process thereof.
Background
With the rapid development of building engineering, a plurality of ultra-large span structures and a plurality of novel building models are generated, the structures and the models are very complex, in order to enable the structures to meet the requirements of the building models, some components in the structures need to change along with the change of curvature of the structures, the changes comprise bending, torsion and abnormity of the components, and the concrete structures cannot realize the models independently due to self heaviness and later bearing capacity. Therefore, for the special-shaped building, the construction quality of the special-shaped building is related to the building shape of the engineering main body, so that higher requirements are put on the construction and design of the structural members, and how to ensure that the blade surface steel die has characteristics of excellent structural strength and the like while having larger distortion amplitude needs technical personnel to carry out accurate design.
The project is a stadium, and the total building area is 42122.47 square meters; comprises four monomer buildings: the building comprises an art building (art hall) building, a gymnasium building, a natatorium building, a exhibition hall (exhibition hall) building, a stadium building and a vestibule, wherein the art hall building is free of a steel structure, and the construction scheme is not specifically explained. The total building area of the project is 42122.47 square meters; wherein: the building area of an art building (an art hall) is 8740 square meter, the building area of a gymnasium is 6513 square meter, the building area of a swimming hall is 4575.52 square meters, the building area of a exhibition hall (an exhibition hall) is 7143.88 square meters and the building area of a stadium is 15150.07 square meters.
The steel construction is because it mainly forms through steel pipe assembly, and it is very high to the design rationality requirement of structure, and it is not only simple to build a molding out, and it must also accord with the mechanics principle, lets its support and the bearing capacity of guaranteeing whole building.
Disclosure of Invention
The purpose of the invention is as follows: in order to overcome the defects, the invention aims to provide a safe and stable steel structure building which is simple in structure, reasonable in design and high in automation degree, reduces the amount of manual labor and improves the working efficiency.
The technical scheme is as follows: in order to achieve the purpose, the invention provides a safe and stable steel structure building which comprises trusses and a skylight, wherein each truss is composed of a left truss and a right truss, each of the left truss and the right truss is composed of a main truss, a secondary truss and a ring truss, a jig frame is arranged below each main truss, each secondary truss is arranged between the two main trusses, a connecting beam is arranged between the two main trusses and positioned on one side of each secondary truss, an outer main truss is arranged on the outer side of each main truss, the other ends of the outer main trusses are connected through the ring trusses, one ends of the main trusses, close to the ground, are fixed through embedded parts, a middle main truss and a middle secondary truss are arranged between the left truss and the right truss, the skylight is arranged between the two middle main steel trusses, the left truss and the right truss are symmetrically designed, and the skylight is matched with the trusses in a limiting mode.
The safe and stable steel structure building is simple in structure and convenient to install, the skylight is arranged between the left truss and the right truss and matched with the left truss and the right truss, so that the special-shaped steel structure building can meet the requirements of customers on special shapes, can better meet mechanical requirements, can better meet the requirements of the self stability of the building and the bearing capacity and supporting capacity of later use while ensuring the special-shaped effect, and can effectively ensure the use safety and stability.
The skylight is a dome type skylight, wherein the design of the dome type skylight not only improves the lighting area of the skylight, but also greatly improves the supporting performance of the skylight, and further improves the stability of the whole building.
According to the invention, the secondary member is arranged between one end of the main truss, which is positioned on the ground, and the ring truss, the temporary support is arranged below the secondary member, and the arrangement of the secondary member further improves the structural stability and the connection safety of the secondary member.
Cantilevers are arranged on the outer side of the secondary rod piece and between the main truss and the ring truss, and a single-piece truss is arranged between the cantilevers.
The skylight comprises a central truss, a skylight ring truss, a middle chord box girder, a middle chord connecting beam and an upper chord truss, wherein the skylight ring truss is arranged on the outer side of the central truss; the upper chord truss is arranged above the middle chord connecting beam, and the middle chord box girder is connected with the skylight ring truss and the upper chord truss through the supporting frame; the upper chord truss is arranged between the central truss and the upper chord truss. The skylight structure is designed, so that the daylighting effect is maximized, and the skylight structure is perfectly matched with the left truss and the right truss on the two sides, the requirements of structural design and daylighting are met, and the stability of the whole structure and the safety of later use are further improved.
The main truss is a large-span truss formed by multiple sections of main steel trusses, so that the length of the main truss can be adjusted according to actual requirements, and the size can be adjusted.
The invention relates to a construction process of a safe and stable steel structure building, which comprises the following specific steps:
(1): first, the various trusses required are faced on the ground: assembling a main truss, a secondary truss, a ring truss, an outer side main truss, a middle main steel truss, a middle secondary truss, a single-piece truss and various trusses related to the skylight;
(2): assembling the left truss after assembling various trusses required in the construction process, and building a jig frame at a specified position on the ground;
(3): after the jig frame is built, measuring and positioning a first section of main steel truss in the main trusses, arranging two groups of cable wind ropes for temporary fixing, hoisting the cable wind ropes by a crane, and placing the cable wind ropes on the built jig frame;
(4): after the first section of main steel truss is placed in the previous step, the second section of main steel truss is lifted and placed to a specified position through the crane according to the mode, the elevation among the first section of main steel truss is kept consistent, and then the gap among the trusses is adjusted;
(5): after the second section of main steel truss is hoisted, welding the second section of main steel truss with the joint of the first section of main steel truss, cutting off the installation lug plate after welding is finished, performing repair welding on the part, and polishing the interface after welding is finished to make the part smooth and excessive;
(6): according to the actual requirement of construction, repeating the steps (4) and (5) to assemble the main truss until the main truss meets the size requirement required by construction;
(7): then, according to the same method, repeating the steps (2) to (7) to install the right truss on the other surface;
(8): then, arranging a secondary truss between two main steel trusses of the main truss, and fixing two sides of the secondary truss;
(9): after the secondary trusses are hoisted, hoisting a connecting beam between the main trusses and on one side of the secondary trusses;
(10): after the connecting beam is hoisted, hoisting the ring truss at a specified position, and hoisting an outer main truss between the main truss and the ring truss;
(11): then, repeating the steps (9) to (11) to install the rest part of the right truss;
(12): after the right truss is installed in the previous step, arranging a middle main steel truss between the left truss and the right truss, welding the middle main steel truss with the joints of the left truss and the right truss, installing a middle secondary truss on the side surface of the middle main steel truss, and welding the middle secondary truss with the joints of the middle main steel truss and the ring truss;
(13): after the middle secondary truss is installed and welded, arranging a skylight between the two middle main steel trusses, and lifting the skylight by using two cranes;
(14): after the skylight is installed, a temporary support is built between the main truss and the ring truss, a secondary rod is hoisted between the main truss and the ring truss through a crane, and the secondary rod and the connection part between the main truss and the ring truss are welded;
(15): after the secondary member is hoisted, hoisting and overhanging the outer sides of the main truss and the secondary member, and welding and fixing the main truss and the secondary member;
(16): in the process of cantilever hoisting, two single-piece trusses (71) are combined and connected together by a temporary support before the suspension hoisting, and then the suspension hoisting is carried out;
(17): and (5) hoisting the single truss on the outer side of the cantilever, and completing cantilever installation of the whole building according to the same method of the steps (16) to (17).
In the invention, when all the parts are butted, the precision of the splicing port is ensured, the shrinkage generated by truss welding is reserved, after the butt welding is finished, the mounting lug plate is cut off, the part is subjected to repair welding, and after all the welding work is finished, the interface is polished to be excessive smoothness.
The processing technology of the skylight disclosed by the invention is as follows:
(1): firstly, building a jig frame on the ground according to the construction requirement, and then splicing the central truss on the jig frame according to the construction drawing and parameters;
(2): after the assembly of the ring truss is finished, assembling the ring truss at a specified position outside the central truss;
(3): after the ring truss is assembled, installing a medium chord box girder on the ring truss;
(4): after the middle-chord box beam is installed, a middle-chord connecting beam is installed on the middle-chord box beam, and then an upper-chord truss is arranged above the middle-chord connecting beam;
(5) after the upper chord truss is installed, arranging a support frame between the middle chord box beam and the upper chord truss, and assembling the support frame.
The technical scheme shows that the invention has the following beneficial effects:
1. the safe and stable steel structure building is simple in structure and convenient to install, the skylight is arranged between the left truss and the right truss and matched with the left truss and the right truss, so that the special-shaped steel structure building can meet the requirements of customers on special shapes, can better meet mechanical requirements, can better meet the requirements of the self stability of the building and the bearing capacity and supporting capacity of later use while ensuring the special-shaped effect, and can effectively ensure the use safety and stability.
2. The skylight comprises a central truss, a skylight ring truss, a middle chord box girder, a middle chord connecting beam and an upper chord truss, wherein the skylight ring truss is arranged on the outer side of the central truss; the upper chord truss is arranged above the middle chord connecting beam, and the middle chord box girder is connected with the skylight ring truss and the upper chord truss through the supporting frame; the upper chord truss is arranged between the central truss and the upper chord truss. The skylight structure is designed, so that the daylighting effect is maximized, and the skylight structure is perfectly matched with the left truss and the right truss on the two sides, the requirements of structural design and daylighting are met, and the stability of the whole structure and the safety of later use are further improved.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural view of a left truss and a right truss according to the present invention;
FIG. 3 is a partial enlarged view of a sunroof according to the present invention;
in the figure: truss-1, skylight-2, left truss-3, right truss-4, secondary member-5, temporary support-6, main truss-31, secondary truss-32, ring truss-33, jig frame-34, outer main truss-35, middle main steel truss-36, middle secondary truss-37, central truss-21, skylight ring truss-22, middle chord box beam-23, middle chord connecting beam-24, upper chord truss-25, support frame-26, cantilever-7 and single truss-71.
Detailed Description
The invention is further elucidated with reference to the drawings and the embodiments.
Examples
A safe and stable type steel structure building as shown in fig. 1 to 3, comprising: the skylight comprises a truss 1 and a skylight 2, wherein the truss 1 consists of a left truss 3 and a right truss 4, and the left truss 3 and the right truss 4 consist of a main truss 31, a secondary truss 32 and a ring truss 33;
the relation of the above parts is as follows:
the below of main truss 31 is equipped with bed-jig 34, secondary truss 32 establishes between two main trusses 31, just one side that is located secondary truss 32 between the main truss 31 is equipped with the tie-beam, the outside of main truss 31 is equipped with outside main truss 35, the other end of outside main truss 35 passes through ring truss 33 and connects, it is fixed that the one end that main truss 31 is close to ground is through the embedded part, be equipped with middle main steel truss 36 and middle secondary truss 37 between left side truss 3 and the right side truss 4, skylight 2 is located between two middle main steel trusses 36, left side truss 3 and right side truss 4 are the symmetry design, skylight 2 matches with 1 limit of truss.
In this embodiment, the skylight 2 is a dome skylight 2.
In this embodiment, a secondary member 5 is disposed between one end of the primary truss 31 on the ground and the ring truss 33, and a temporary support 6 is disposed below the secondary member 5.
In this embodiment, cantilevers 7 are provided on the outer side of the secondary member 5 and between the primary truss 31 and the ring truss 33, and a single truss 71 is provided between the cantilevers 7.
The skylight 2 in the embodiment comprises a central truss 21, a skylight ring truss 22, a middle chord box girder 23, a middle chord connecting beam 24 and an upper chord truss 25, wherein the skylight ring truss 22 is arranged on the outer side of the central truss 21, the middle chord box girder 23 is arranged on the skylight ring truss 22, and the middle chord connecting beam 24 is arranged on the middle chord box girder 23; the upper chord truss 25 is arranged above the middle chord connecting beam 24, and the middle chord box beam 23 is connected with the skylight ring truss 22 and the upper chord truss 25 through a support frame 26; the upper chord truss 25 is arranged between the central truss 21 and the middle chord box girder 23.
In this embodiment, the main truss 31 is a long-span truss formed by multiple sections of main steel trusses.
Example 2
A safe, stable steel structure building as shown, comprising: the skylight comprises a truss 1 and a skylight 2, wherein the truss 1 consists of a left truss 3 and a right truss 4, and the left truss 3 and the right truss 4 consist of a main truss 31, a secondary truss 32 and a ring truss 33;
the relation of the above parts is as follows:
the below of main truss 31 is equipped with bed-jig 34, secondary truss 32 establishes between two main trusses 31, just one side that is located secondary truss 32 between the main truss 31 is equipped with the tie-beam, the outside of main truss 31 is equipped with outside main truss 35, the other end of outside main truss 35 passes through ring truss 33 and connects, it is fixed that the one end that main truss 31 is close to ground is through the embedded part, be equipped with middle main steel truss 36 and middle secondary truss 37 between left side truss 3 and the right side truss 4, skylight 2 is located between two middle main steel trusses 36, left side truss 3 and right side truss 4 are the symmetry design, skylight 2 matches with 1 limit of truss.
In this embodiment, the skylight 2 is a dome skylight 2.
In this embodiment, a secondary member 5 is disposed between one end of the primary truss 31 on the ground and the ring truss 33, and a temporary support 6 is disposed below the secondary member 5.
In this embodiment, cantilevers 7 are provided on the outer side of the secondary member 5 and between the primary truss 31 and the ring truss 33, and a single truss 71 is provided between the cantilevers 7.
In the embodiment, the skylight 2 comprises a central truss 21, a skylight ring truss 22, a middle-chord box girder 23, a middle-chord connecting girder 24 and an upper-chord truss 25, wherein the skylight ring truss 22 is arranged on the outer side of the central truss 21, the middle-chord box girder 23 is arranged on the skylight ring truss 22, and the middle-chord connecting girder 24 is arranged on the middle-chord box girder 23; the upper chord truss 25 is arranged above the middle chord connecting beam 24, and the middle chord box beam 23 is connected with the skylight ring truss 22 and the upper chord truss 25 through a support frame 26; the upper chord truss 25 is arranged between the central truss 21 and the middle chord box girder 23.
In this embodiment, the main truss 31 is a long-span truss formed by a plurality of sections of main steel trusses.
In the embodiment, a construction process of a safe and stable steel structure building comprises the following specific steps:
(1): first, the various trusses required are faced on the ground: splicing the main truss 31, the secondary truss 32, the ring truss 33, the outer main truss 35, the middle main steel truss 36, the middle secondary truss 37, the single-piece truss 71 and various trusses involved in the skylight 2;
(2): after various trusses required in the construction process are assembled, the left truss 3 is assembled, and the jig frame 34 is built at a designated position on the ground;
(3): after the jig frame 34 is built, measuring and positioning a first section of main steel truss in the main truss 31, setting two groups of cable wind ropes for temporary fixation, then hoisting the cable wind ropes by a crane and placing the cable wind ropes on the built jig frame 34;
(4): after the first section of main steel truss is placed in the previous step, the second section of main steel truss is lifted and placed to a specified position through the crane according to the mode, the elevation among the first section of main steel truss is kept consistent, and then the gap among the trusses is adjusted;
(5): after the second section of main steel truss is hoisted, welding the connection part of the second section of main steel truss and the first section of main steel truss, cutting off the installation lug plate after welding is finished, and then performing repair welding on the part;
(6): according to the actual requirement of construction, repeating the steps (4) and (5) to assemble the main truss 31 until the main truss meets the size requirement required by construction;
(7): then, according to the same method, repeating the steps (2) to (7) to install the right truss 4 on the other surface;
(8): then, a secondary truss 32 is arranged between the two main steel trusses of the main truss 2, and the two sides of the secondary truss are fixed;
(9): after the secondary trusses 32 are hoisted, hoisting a connecting beam at one side of the secondary trusses 32 between the main trusses 31;
(10): after the connecting beam is hoisted, hoisting the ring truss 33 at a specified position, and hoisting an outer side main truss 35 between the main truss 31 and the ring truss 33;
(11): then, repeating the steps (8) to (10) to install the rest part of the right truss 4 in the manner described above;
(12): after the right truss 4 is installed in the previous step, a middle main steel truss 36 is arranged between the left truss 3 and the right truss 4 and is welded with the interface between the middle main steel truss and the left truss 3 and the interface between the middle main steel truss and the right truss 4, and then a middle secondary truss 37 is installed on the side face of the middle main steel truss 36 and is welded with the connecting position between the middle main steel truss 36 and the ring truss 33;
(13): after the middle secondary truss 37 is installed and welded, arranging the skylight 2 between the two middle main steel trusses 36, and lifting the skylight 2 by using two cranes;
(14): after the skylight 2 is installed, a temporary support is built between the main truss 31 and the ring truss 33, the secondary rod 5 is hoisted between the main truss 31 and the ring truss 33 through a crane, and the secondary rod 5 and the connection part between the main truss 31 and the ring truss 33 are welded;
(15): after the hoisting of the secondary rod 5 is completed, hoisting the cantilever 7 at the outer sides of the main truss 31 and the secondary rod 5, and welding and fixing the cantilever 7;
(16): in the process of hoisting the cantilever 7, the two single-piece trusses 71 are combined and temporarily supported and connected together before hoisting;
(17): and then hoisting the single-piece truss 71 outside the cantilever 7, and finishing the installation of the cantilever 7 of the whole building according to the same method of the steps (15) to (16).
In this embodiment, when the butt joint of each part, guarantee the precision of piecing together the interface, reserve the shrinkage that the truss welding produced simultaneously, after butt welding accomplishes, excision installation otic placode, repair welding is carried out to this position again, waits that whole weldment work accomplishes the back, and it is smooth excessive to deal with the interface to polish into.
The processing technology of the skylight 2 in the embodiment is as follows:
(1): firstly, building a jig frame on the ground according to the construction requirement, and then splicing the central truss 21 on the jig frame according to the construction drawing and parameters;
(2): after the assembly is completed, the ring truss 22 is assembled at the designated position outside the central truss 21;
(3): after the ring truss 22 is assembled, mounting a middle chord box girder 23 on the ring truss 22;
(4): after the middle-chord box beam 23 is installed, a middle-chord connecting beam 24 is installed on the middle-chord box beam 23, and then an upper-chord truss 25 is arranged above the middle-chord connecting beam 24;
(5) after the upper chord truss 25 is installed, a support frame 26 is arranged between the middle chord box beam 23 and the upper chord truss 25 and is assembled.
In the embodiment, the construction process of the safe and stable steel structure building comprises the following butt joint notice items:
A. when the truss is butted and assembled at high altitude, the truss is butted and assembled according to the designed elevation and the axis position strictly;
B. during welding, a reasonable welding sequence is appointed according to the actual splicing measurement length or the lateral bending condition of each roof truss, so that the welding deformation is minimized;
C. the measurement is carried out in a tracking mode, the conditions of settlement and the like of the supporting frame are observed in time, and the elevation and the axis of the node of the truss are adjusted;
D. during overhead operation in the truss installation process, a ladder stand which can walk up and down is arranged on an overhead support frame, and a long springboard is laid on a chord tube of the truss to serve as a walkway, so that the truss can conveniently pass back and forth;
E. before hoisting, the butt joint welding operation platform is firstly erected on the ground, and is hoisted to the high altitude along with the truss during hoisting.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that modifications can be made by those skilled in the art without departing from the principle of the present invention, and these modifications should also be construed as the protection scope of the present invention.
Claims (7)
1. The utility model provides a safe, stable form steel construction building which characterized in that: the method comprises the following steps: the skylight truss comprises a truss (1) and a skylight (2), wherein the truss (1) is composed of a left truss (3) and a right truss (4), the left truss (3) and the right truss (4) are composed of a main truss (31), a secondary truss (32) and a ring truss (33), a jig frame (34) is arranged below the main truss (31), the secondary truss (32) is arranged between the two main trusses (31), a connecting beam is arranged on one side, located on the secondary truss (32), between the main trusses (31), an outer side main truss (35) is arranged on the outer side of the main truss (31), the other end of the outer side main truss (35) is connected through the ring truss (33), one end, close to the ground, of the main truss (31) is fixed through an embedded part, a middle main steel truss (36) and a middle secondary truss (37) are arranged between the left truss (3) and the right truss (4), and the skylight (2) is arranged between the two middle main steel trusses (36), the left truss (3) and the right truss (4) are symmetrically designed, and the skylight (2) is matched with the truss (1) in a limited mode; the skylight (2) adopts a dome type skylight (2);
the skylight (2) comprises a central truss (21), a skylight ring truss (22), a middle chord box girder (23), a middle chord connecting beam (24) and an upper chord truss (25), wherein the skylight ring truss (22) is arranged on the outer side of the central truss (21), the middle chord box girder (23) is arranged on the skylight ring truss (22), and the middle chord connecting beam (24) is arranged on the middle chord box girder (23); the upper chord truss (25) is arranged above the middle chord connecting beam (24), and the middle chord box beam (23) is connected with the skylight ring truss (22) and the upper chord truss (25) through the supporting frame (26); the upper chord truss (25) is arranged between the central truss (21) and the middle chord box girder (23); .
2. A safe, stable form steel structural building according to claim 1, wherein: and a secondary rod (5) is arranged between one end of the main truss (31) on the ground and the ring truss (33), and a temporary support (6) is arranged below the secondary rod (5).
3. A safe, stable form steel structural building according to claim 2, characterized in that: and cantilevers (7) are arranged on the outer side of the secondary rod piece (5) and between the main truss (31) and the ring truss (33), and a single-piece truss (71) is arranged between the cantilevers (7).
4. A safe and stable type steel structural building according to claim 1, characterized in that: the main truss (31) is a large-span truss formed by a plurality of sections of main steel trusses.
5. The construction process of a safe and stable steel structure building according to claim 3, wherein: the specific construction process is as follows:
(1): first, facing the required various trusses on the ground: the main truss (31), the secondary truss (32), the ring truss (33), the outer side main truss (35), the middle main steel truss (36), the middle secondary truss (37), the single-piece truss (71) and various trusses related to the skylight (2) are spliced;
(2): after various trusses required in the construction process are assembled, firstly assembling a left truss (3), and firstly building a jig frame (34) at a specified position on the ground;
(3): after the jig frame (34) is built, measuring and positioning a first section of main steel truss in the main truss (31), setting two groups of cable wind ropes for temporary fixation, then hoisting the cable wind ropes by a crane and placing the cable wind ropes on the built jig frame (34);
(4): after the first section of main steel truss is placed in the previous step, the second section of main steel truss is lifted to a specified position through a crane according to the mode, the elevation among the first section of main steel truss is kept consistent, and then the gap among the trusses is adjusted;
(5): after the second section of main steel truss is hoisted, welding the second section of main steel truss with the joint of the first section of main steel truss, cutting off the installation lug plate after welding is finished, performing repair welding on the part, and polishing the interface after welding is finished to make the part smooth and excessive;
(6): according to the actual requirement of construction, repeating the steps (4) and (5) to assemble the main truss (31) until the main truss meets the size requirement required by construction;
(7): then, according to the same method, repeating the steps (2) to (7) to install the right truss (4) on the other surface;
(8): then, a secondary truss (32) is arranged between the two main steel trusses of the main truss (31), and the two sides of the secondary truss are fixed;
(9): after the secondary trusses (32) are hoisted, hoisting a connecting beam at one side of the secondary trusses (32) between the main trusses (31);
(10): after the connecting beam is hoisted, hoisting the ring truss (33) at a specified position, and hoisting an outer side main truss (35) between the main truss (31) and the ring truss (33);
(11): then, repeating the steps (9) to (11) to install the rest part of the right truss (4) in the manner described above;
(12): after the right truss (4) is installed in the previous step, a middle main steel truss (36) is arranged between the left truss (3) and the right truss (4), the middle main steel truss and the joints of the left truss (3) and the right truss (4) are welded, then a middle secondary truss (37) is installed on the side face of the middle main steel truss (36), and the middle secondary truss and the joints of the middle main steel truss (36) and the ring truss (33) are welded;
(13): after the middle secondary truss (37) is installed and welded, arranging the skylight (2) between the two middle main steel trusses (36), and lifting the skylight (2) by using two cranes;
(14): after the skylight (2) is installed, a temporary support is built between the main truss (31) and the ring truss (33), the secondary rod (5) is hoisted between the main truss and the ring truss through a crane, and the secondary rod (5), the main truss (31) and the ring truss (33) are welded at the connecting position;
(15): after the secondary rod piece (5) is hoisted, hoisting the cantilever (7) at the outer sides of the main truss (31) and the secondary rod piece (5), and welding and fixing the cantilever (7);
(16): in the process of hoisting the cantilever (7), two single-sheet trusses (71) are combined and connected together by a temporary support before hoisting;
(17): and then hoisting the single-piece truss (71) at the outer side of the cantilever (7), and finishing the installation of the cantilever (7) of the whole building according to the same method of the steps (16) to (17).
6. The construction process of a safe and stable steel structure building according to claim 5, wherein: when all the parts are butted, the precision of the splicing port is ensured, the shrinkage generated by truss welding is reserved, after the butt welding is completed, the mounting lug plate is cut off, the part is subjected to repair welding, and after all the welding work is completed, the interface is polished to be smooth and excessive.
7. The construction process of a safe and stable steel structure building according to claim 6, wherein: the processing technology of the skylight (2) is as follows:
(1): firstly, building a jig frame on the ground according to the construction requirement, and then splicing a central truss (21) on the jig frame according to the construction drawing and parameters;
(2): after the assembly is finished, the ring truss (22) is assembled at the designated position outside the central truss (21);
(3): after the ring truss (22) is assembled, mounting a middle chord box girder (23) on the ring truss (22);
(4): after the middle-chord box beam (23) is installed, a middle-chord connecting beam (24) is installed on the middle-chord box beam (23), and then an upper-chord truss (25) is arranged above the middle-chord connecting beam (24);
(6) after the upper chord truss (25) is installed, a support frame (26) is arranged between the middle chord box beam (23) and the upper chord truss (25) and is assembled.
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