CN116575583A - Continuous ultra-long overhanging steel structure belt and installation method thereof - Google Patents
Continuous ultra-long overhanging steel structure belt and installation method thereof Download PDFInfo
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- CN116575583A CN116575583A CN202310844047.5A CN202310844047A CN116575583A CN 116575583 A CN116575583 A CN 116575583A CN 202310844047 A CN202310844047 A CN 202310844047A CN 116575583 A CN116575583 A CN 116575583A
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 70
- 239000010959 steel Substances 0.000 title claims abstract description 70
- 238000009434 installation Methods 0.000 title claims abstract description 13
- 238000000034 method Methods 0.000 title claims abstract description 12
- 238000007789 sealing Methods 0.000 claims abstract description 69
- 238000010276 construction Methods 0.000 claims abstract description 45
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 25
- 238000004458 analytical method Methods 0.000 claims description 3
- 238000006073 displacement reaction Methods 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 230000009286 beneficial effect Effects 0.000 abstract description 5
- 238000005192 partition Methods 0.000 abstract description 2
- 230000008901 benefit Effects 0.000 description 3
- 239000010410 layer Substances 0.000 description 3
- 238000004364 calculation method Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Classifications
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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
- E04B1/342—Structures covering a large free area, whether open-sided or not, e.g. hangars, halls
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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
- E04B1/34—Extraordinary structures, e.g. with suspended or cantilever parts supported by masts or tower-like structures enclosing elevators or stairs; Features relating to the elastic stability
-
- 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
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
- E04C3/04—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
- E04C3/04—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal
- E04C2003/0404—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects
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Abstract
The invention discloses a continuous overlength overhanging steel structure belt and an installation method thereof, wherein the overhanging steel structure belt has a wavy multi-curvature and a downward gradually-expanding arc shape from inside to outside; the invention is beneficial to ensuring the targeted connection of each unit and the main body structure through the arrangement of the sub-units; through the arrangement of different units, the positions of the cantilever sealing beams and the nodes of the follow-up partition construction are facilitated to be clear; the arrangement of the angle reinforcing unit is beneficial to ensuring the reinforcing arrangement of the cantilever at a large corner; the stress balance and the integrity of the large-angle unit are enhanced in a three-dimensional manner through the joint arrangement of the overhanging angle column, the overhanging bifurcation beam and the overhanging angle broken line beam; the design requirement of the elevation of the overhanging outside the main body skylight can be adaptively ensured through the landing layer arrangement of the overhanging seal Liang Lianjian; the interval division of the continuous overlong overhanging steel structure belt is beneficial to the pipelining construction of the overhanging structure, and the temporary support columns can be arranged in stages, so that a few-support self-bearing installation method is adopted.
Description
Technical Field
The invention belongs to the technical field of steel structures, and particularly relates to a continuous overlength overhanging steel structure belt and an installation method thereof.
Background
With the continuous development of science and technology, the structural form of steel structure building is continuously innovated, and overhanging steel structures are also increasingly appearing in various buildings. How to ensure that the overhanging structure meets the modeling requirement under the condition of balanced stress, and ensure the integral installation of the overhanging steel structure and the main body structure is a key point and a difficult point of construction. The general overhanging structure mostly adopts regular linear or short-distance overhanging, thereby ensuring the construction quality; the method has a fresh relation to how the continuous overlong overhanging steel structure is designed and constructed. In addition, the construction process of the overhanging steel structure is an unstable system, temporary support is usually needed to ensure construction safety and positioning accuracy, but if the number of continuous overlong overhanging steel structure components is large, if all overhanging components are temporarily supported, construction measures are consumed greatly, and the construction progress and progress are very unfavorable. Therefore, a set of scientific construction method is researched aiming at a continuous overlong overhanging steel structure, and the cost is reduced, and the benefit is improved.
Disclosure of Invention
The invention provides a continuous overlength overhanging steel structure belt and an installation method thereof, which are used for solving the technical problems of continuous overlength design, connection with a main steel structure, construction and installation and the like of a prefabricated overhanging steel structure.
In order to achieve the above purpose, the invention adopts the following technical scheme:
the continuous overlength overhanging steel structure belt has a wavy multi-curvature and gradually-expanding arc shape from inside to outside;
the cantilever steel structure belt is integrally U-shaped, two bottom corners are provided with a first cantilever unit of a hall and a second cantilever unit of the hall, a first cantilever unit of a skylight is arranged at the bottom of the U-shaped and connected between the first cantilever unit of the hall and the second cantilever unit of the hall, two vertical parts of the U are respectively provided with an angle reinforcing unit and an entrance cantilever unit, and a second cantilever unit of the skylight is also connected between the angle reinforcing unit and the first cantilever unit of the hall;
the overhanging steel structure belt is formed by a group of overhanging main beams and overhanging seals Liang Gewei connected to overhanging ends of the overhanging main beams, and the overhanging main beams are also connected with overhanging secondary beams and corner secondary beams arranged at corners;
the cantilever main beam comprises a cantilever beam body, cantilever beam middle plates arranged in the middle of the cantilever beam body in the long direction, and cantilever middle vertical plates arranged in the cantilever beam middle plates in the long direction at intervals; the cantilever beam bodies are arranged in an arc shape and are connected in a spliced manner, and the vertical plates in the cantilever at the spliced position are arranged in an encrypted manner;
the cantilever sealing beams are arranged at the ends of the first cantilever unit of the window and the second cantilever unit of the skylight, an cantilever upper sealing beam and a cantilever lower sealing beam are connected between the cantilever upper sealing beam and the cantilever lower sealing beam, and the height of the cantilever lower sealing beam is lower than that of the cantilever upper sealing beam; the overhanging lower sealing beam, the overhanging main beam and the overhanging secondary beam form a window first overhanging unit or a skylight second overhanging unit.
Further, the structural sealing beams are connected with structural extension beams at intervals, the structural extension beams are correspondingly connected with the structural beams, and structural columns are arranged below the structural beams at intervals;
the overhanging main beam is arranged along the structure extension beam.
Furthermore, the cantilever beam body is an I-shaped beam body, the cross section of the cantilever beam body from the fixed end to the cantilever end is gradually reduced, the cantilever beam body is connected with a connecting plate in advance, and the cantilever secondary beam and the corner secondary beam are connected through the connecting plate.
Furthermore, the overhanging main beams at the middle parts of the first overhanging unit and the second overhanging unit of the skylight are spliced with an A shape, an H shape or a U shape, and the beam body at the corresponding opening extends into the structure body and is correspondingly and integrally connected with the beam body of the skylight of the structure body.
Further, the cantilever sealing beams of the first cantilever unit, the second cantilever unit, the first cantilever unit, the second cantilever unit and the entrance cantilever unit are arranged in an arc-shaped smooth manner, and the cantilever sealing beams at the angle reinforcing unit and the cantilever main beam are integrally arranged in a trapezoid manner;
the angle reinforcing units are provided with overhanging angle columns at intervals, and overhanging bifurcation beams and overhanging angle broken line beams are connected to the overhanging angle columns.
Further, the cantilever forked beam is a Y-shaped beam, one end of two branches of the Y-shaped beam forked beam is connected with the structural sealing column, and the other end of the Y-shaped beam forked beam is connected with the cantilever secondary beam; one side of the single branch of the Y-shaped beam extends out and is connected to the overhanging girder at the periphery of the angle reinforcing unit.
Furthermore, the overhanging angle folding line beam is connected to the overhanging main beam, the overhanging main beam with the overhanging angle folding line beam corresponding to the height staggered is arranged in a folding line shape in the height direction, and the overhanging angle folding line Liang Waishen end is connected to the overhanging main beam at the periphery of the angle reinforcing unit.
Furthermore, the overhanging seal Liang Lianjian is an H-shaped piece, the bottom of the H-shaped piece is connected with a trapezoid connecting plate, the trapezoid connecting plate is correspondingly connected with the overhanging lower sealing beam, and a stiffening rib plate is further arranged on the H-shaped piece vertically.
Further, the fixed end of the cantilever girder is connected to the structural sealing columns, and the structural sealing girders are connected between the adjacent structural sealing columns; the structure sealing beams are arranged in a fold line shape, and the height of the structure sealing beams is larger than that of the overhanging main beam; the structural sealing beam is an I-shaped beam, and the middle part of the web plate is provided with a middle flat plate and vertical edges in the long direction.
Further, the method for installing the continuous overlong overhanging steel structure belt comprises the following specific steps:
step one, after the structural columns, the structural beams, the structural sealing columns and the structural extension beams are installed, dividing the overhanging steel structure belt into sections;
step two, dividing the sections, namely arranging temporary support columns below the overhanging beam band at intervals according to the structural characteristics of each unit of the overhanging steel structure band and the construction site condition, wherein the temporary support columns are used for temporary fixation when the overhanging steel structure band is installed, and the overhanging structure between the adjacent support columns is divided into a section; wherein temporary support columns are arranged at the dividing points of each unit, and the temporary support columns are arranged at the large positions
Temporary support columns are arranged at the turning positions and the corners;
thirdly, carrying out construction checking calculation on the support of the temporary support column of the overhanging steel structure belt, establishing a finite element analysis model according to the overhanging steel structure belt, assuming load and boundary conditions, calculating by adopting special analysis software to obtain structural internal force, stress and displacement results for safety judgment, if the safety meets the requirements, setting the support position, and if the safety does not meet the requirements, adjusting the support position and carrying out checking calculation again until the construction safety meets the requirements;
hoisting the temporary support column in the nth zone, installing the overhanging girder, the overhanging sealing girder and the overhanging secondary girder, installing the corner secondary girder at the position with the corner secondary girder, and then completing the nth zone; thus, constructing the (n+1) th section; wherein n is 1 or more;
step five, according to the installation sequence of the step four, when the construction of the nth section is completed, removing the temporary support column of the nth section, and using the removed temporary support column for the construction of the (n+2) th section; removing the temporary support column in the (n+1) th section after the construction of the (n+1) th section is completed, and using the removed temporary support column in the (n+3) th section; sequentially circulating until the integral construction of the continuous overlength overhanging steel structure belt is finished;
and step six, or synchronously constructing in each unit for the construction in the interval from the step four to the step five, reserving joints at the splicing positions of each unit, and finally splicing and folding, thereby completing the construction of the continuous overlength overhanging steel structure belt.
The beneficial effects of the invention are as follows:
1) The invention is beneficial to ensuring the targeted connection of each unit and the main body structure by arranging the units, thereby designing the positions and the patterns of the overhanging main beam and the overhanging secondary beam; through the arrangement of different units, the positions of the cantilever sealing beams and the nodes of the follow-up partition construction are facilitated to be clear;
2) The angle reinforcing unit is arranged, so that the reinforcing arrangement of the cantilever at a large corner is facilitated; the stress balance and the integrity of the large-angle unit are enhanced in a three-dimensional manner through the joint arrangement of the overhanging angle column, the overhanging bifurcation beam and the overhanging angle broken line beam;
3) According to the invention, through the descending layer arrangement of the overhanging seal Liang Lianjian at the first overhanging unit and the second overhanging unit of the skylight, the design requirements of the elevation of the overhanging outside the main body skylight can be adaptively ensured.
4) According to the invention, through interval division of the continuous overlong overhanging steel structure belt, the pipelining construction of the overhanging structure is facilitated, the temporary support columns can be arranged in stages, and a few-support self-bearing installation method is adopted; on the premise of ensuring the structural position of the cantilever and construction safety, a small amount of temporary supports are arranged below the cantilever beam belt, the peripheral edge sealing beam is utilized to bear the self load of the structure, the cantilever supports can be used in a turnover mode, and the temporary support input quantity is greatly reduced. The construction cost is greatly reduced while the purpose of quick and accurate installation is realized.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention; the primary object and other advantages of the invention may be realized and attained by means of the instrumentalities and particularly pointed out in the specification.
Drawings
FIG. 1 is a schematic perspective view of a continuous, ultra-long overhanging steel structural band;
FIG. 2 is a partial schematic view of a continuous overlength overhanging steel structural band;
FIG. 3 is a schematic illustration of the connection of a portion of a continuous, ultra-long overhanging steel structural band to a main structure;
FIG. 4 is a schematic view of the structure of the corner reinforcing unit;
FIG. 5 is a schematic view of the cantilever girder and its connection structure;
FIG. 6 is a schematic illustration of the overhanging seal Liang Lianjian and its connection;
fig. 7 is a schematic diagram of construction section division of a continuous ultra-long overhanging steel structure belt.
Reference numerals: the device comprises a first cantilever unit of a 1-hall, a second cantilever unit of the 2-hall, a 3-angle reinforcing unit, a first cantilever unit of a 4-skylight, a second cantilever unit of a 5-skylight, a 6-entrance cantilever unit, a 7-cantilever girder, a 71-cantilever girder body, a 72-cantilever girder middle plate, a 73-cantilever middle vertical plate, an 8-cantilever sealed girder, an 81-cantilever upper sealed girder, an 82-cantilever lower sealed girder, a 9-cantilever sub-girder, a 10-angle sub-girder, an 11-structure sealed girder, a 12-structure sealed column, a 13-structure protruded girder, a 14-structure girder, a 15-structure girder, a 16-temporary support column, a 17-cantilever entrance reinforcing girder, an 18-cantilever angle column, a 19-cantilever fork girder, a 20-cantilever angle folding line girder and a 21-cantilever sealed girder connector.
Detailed Description
The engineering steel structure is a special-shaped curved surface steel frame structure and mainly comprises a basement part and an overground part. The underground two layers, the ground steel structure one layer and the local interlayer are designed with a plurality of large space areas, the component forms are complex and various, and the materials comprise Q355GJC and Q460GJC. According to structural arrangement and component characteristics, the construction area is divided into a steel frame, a large-span steel beam, overhanging and the like. As shown in fig. 1 to 7, the overhanging steel structure has a gradually expanding arc shape with multiple curvatures being wavy and being downward from inside to outside; the cantilever steel structure belt is integrally U-shaped, two bottom corners are provided with a first cantilever unit 1 and a second cantilever unit 2, a first skylight cantilever unit 4 is arranged at the bottom of the U-shaped and connected between the first cantilever unit 1 and the second cantilever unit 2, two U vertical parts are provided with a corner reinforcing unit 3 and an inlet cantilever unit 6 respectively, and a second skylight cantilever unit 5 is also connected between the corner reinforcing unit 3 and the first cantilever unit 1.
In this embodiment, one side of the overhanging steel structure belt close to the structure body is overhanging and connected to the structural sealing column 12 and is connected with the corresponding structural sealing beam 11 in sequence, the overhanging steel structure belt is formed by encircling a group of overhanging main beams 7 and overhanging sealing beams 8 connected to overhanging ends of the overhanging main beams 7, and overhanging main beams 7 are also connected with overhanging sub-beams 9 and corner sub-beams 10 arranged at corners. The structure sealing beams 11 are connected with structure extension beams 13 at intervals, the structure extension beams 13 are correspondingly connected with structure beams 14, and structure columns 15 are arranged below the structure beams 14 at intervals; the overhanging main beam 7 is arranged along the structure extension beam 13.
In the embodiment, the cantilever girder 7 comprises a cantilever girder body 71, a cantilever girder middle flat plate 72 arranged in the middle of the cantilever girder body 71 in the long direction, and cantilever middle vertical plates 73 arranged in the cantilever girder middle flat plate 72 in the long direction at intervals; the cantilever beam bodies 71 are arranged in an arc shape and are connected in a spliced manner, and the cantilever middle vertical plates 73 at the spliced position are arranged in an encrypted manner; the overhanging main beams 7 are arranged radially, the distance is 3 meters, and the span is 21-30 meters; the height range of the outer side end part is 1.63-7.14 m, and the elevation is irregularly, continuously and gradually changed.
In the embodiment, the fixed end of the cantilever girder 7 is connected to the structural sealing columns 12, and the structural sealing girders 11 are connected between the adjacent structural sealing columns 12; the structure sealing beams 11 are arranged in a fold line shape, and the height of the structure sealing beams 11 is larger than that of the overhanging main beams 7; the structural sealing beam 11 is an I-shaped beam, and the middle part of the web plate is provided with a middle flat plate and vertical edges in the long direction. The cantilever beam body 71 is an I-shaped beam body, the cross section of the cantilever beam body 71 from the fixed end to the cantilever end is gradually reduced, the cantilever beam body 71 is pre-connected with a connecting plate, and the cantilever secondary beam 9 and the corner secondary beam 10 are connected through the connecting plate.
In the embodiment, the overhanging sealed beam 8 is provided with an overhanging upper sealed beam 81 and an overhanging lower sealed beam 82 at the end parts of the first overhanging unit 4 and the second overhanging unit 5 of the skylight, an overhanging sealed beam connecting piece 21 is connected between the overhanging upper sealed beam 81 and the overhanging lower sealed beam 82, and the height of the overhanging lower sealed beam 82 is lower than that of the overhanging upper sealed beam 81; the overhanging lower sealing beam 82, the overhanging main beam 7 and the overhanging secondary beam 9 form a skylight first overhanging unit 4 or a skylight second overhanging unit 5. The overhanging sealing beam connecting piece 21 is an H-shaped piece, the bottom of the H-shaped piece is connected with a trapezoid connecting plate, the trapezoid connecting plate is correspondingly connected with the overhanging lower sealing beam 82, and a stiffening rib plate is further arranged on the H-shaped piece in the vertical direction.
In the embodiment, the cantilever sealing beam 8 is a box-type broken line beam, the material adopts Q355C, the cross section is in a square shape of 450 multiplied by 200 multiplied by 20mm, the maximum span is 4.8 meters, the cantilever sealing beam is arranged along the end part of the cantilever main beam 7, the height range is 1.63-7.14 m, the elevation is irregularly, continuously and gradually changed, and the two ends are rigidly connected with the cantilever beam.
In this embodiment, the overhanging girder 7 in the middle of the first overhanging unit 4 and the second overhanging unit 5 of the skylight is spliced with an a-shape, an H-shape or a U-shape, and the girder body at the corresponding opening extends into the structure body and is correspondingly and integrally connected with the girder body of the skylight of the structure body. The cantilever sealing beams 8 of the hall first cantilever unit 1, the hall second cantilever unit 2, the skylight first cantilever unit 4, the skylight second cantilever unit 5 and the entrance cantilever unit 6 are arranged in an arc-shaped smooth manner, and the cantilever sealing beams 8 at the corner reinforcing unit 3 and the cantilever main beams 7 are integrally arranged in a trapezoid manner.
In this embodiment, the angle reinforcing unit 3 is provided with overhanging angle columns 18 at intervals, and overhanging bifurcation beams 19 and overhanging angle broken line beams 20 are connected to the overhanging angle columns 18. The cantilever forked beam 19 is a Y-shaped beam, one end of two branches of the Y-shaped beam forked is connected with the structural sealing column 12, and the other end is connected with the cantilever secondary beam 9; one side of the single branch of the Y-shaped beam extends out and is connected to the overhanging girder 7 at the periphery of the angle reinforcing unit 3. The overhanging angle folding line beam 20 is connected to the overhanging girder 7, the overhanging girder 7 corresponding to the height dislocation of the overhanging angle folding line beam 20 is arranged in a folding line shape in the height direction, and the overhanging end of the overhanging angle folding line beam 20 reaches the overhanging girder 7 at the periphery of the angle reinforcing unit 3.
Referring to fig. 1 to 7, a method for installing a continuous ultra-long overhanging steel structure belt is further described, comprising the following specific steps:
after the structural columns 15, the structural beams 14, the structural seal columns 12 and the structural extension beams 13 are installed, the overhanging steel structural band is divided into sections.
Step two, dividing the section, namely arranging temporary support columns 16 at intervals below the overhanging beam band according to the structural characteristics of each unit of the overhanging steel structure band and the construction site condition, wherein the temporary support is used for temporary fixation when the overhanging steel structure band is installed, and the overhanging structure between adjacent support columns is divided into a section; wherein temporary support columns 16 are arranged at each unit division point, and are large
Temporary support posts 16 are provided at the turns and corners.
Thirdly, carrying out construction checking on the support of the temporary support column 16 of the overhanging steel structure belt, establishing a finite element analysis model according to the overhanging steel structure belt, assuming load and boundary conditions, calculating by adopting special analysis software to obtain structural internal force, stress and displacement results, judging the safety, if the safety meets the requirement, setting the support position, if the safety does not meet the requirement, adjusting the support position, and carrying out checking again until the construction safety meets the requirement.
Hoisting the temporary support column 16 of the nth zone, installing the overhanging main beam 7, the overhanging sealing beam 8 and the overhanging secondary beam 9, installing the corner secondary beam 10 at the position with the corner secondary beam 10, and then finishing the nth zone; thus, constructing the (n+1) th section; wherein n is 1 or more. As shown in fig. 7, n, n+1, n+2, and n+3 are divided sections.
Step five, according to the installation sequence of the step four, when the construction of the nth section is completed, dismantling the temporary support column 16 of the nth section, and using the dismantled temporary support column 16 for the construction of the (n+2) th section; after the construction of the (n+1) th section is completed, removing the temporary support column 16 of the (n+1) th section, and using the removed temporary support column 16 for the construction of the (n+3) th section; and sequentially circulating until the integral construction of the continuous overlength overhanging steel structure belt is finished.
And step six, or synchronously constructing in each unit for the construction in the interval from the step four to the step five, reserving joints at the splicing positions of each unit, and finally splicing and folding, thereby completing the construction of the continuous overlength overhanging steel structure belt.
The foregoing is merely illustrative of preferred embodiments of the present invention, and the scope of the present invention is not limited thereto, but any changes or substitutions that would occur to those skilled in the art within the scope of the present invention are intended to be included in the scope of the present invention.
Claims (10)
1. The continuous overlong overhanging steel structure belt is characterized in that the overhanging steel structure belt has a wavy multi-curvature and is in a downward gradually-expanding arc shape from inside to outside;
the cantilever steel structure belt is integrally U-shaped, two bottom corners are provided with a first cantilever unit (1) and a second cantilever unit (2), a first skylight cantilever unit (4) is arranged at the bottom of the U-shape and connected between the first cantilever unit (1) and the second cantilever unit (2), two U vertical parts are respectively provided with an angle reinforcing unit (3) and an inlet cantilever unit (6), and a second skylight cantilever unit (5) is also connected between the angle reinforcing unit (3) and the first cantilever unit (1);
the cantilever steel structure belt is adjacent to one side of the structure body, is connected to the structure sealing column (12) in a cantilever manner and is connected with the corresponding structure sealing beam (11) in a sequential manner, and is formed by encircling a group of cantilever main beams (7) and cantilever sealing beams (8) connected to the overhanging ends of the cantilever main beams (7), and the cantilever main beams (7) are also connected with cantilever secondary beams (9) and corner secondary beams (10) arranged at corners;
the cantilever main beam (7) comprises a cantilever beam body (71), a cantilever beam middle flat plate (72) arranged in the middle of the cantilever beam body (71) in a long direction, and cantilever middle vertical plates (73) arranged in the cantilever beam middle flat plate (72) in a long direction at intervals; the cantilever beam bodies (71) are arranged in an arc shape and are connected in a spliced manner, and the cantilever middle vertical plates (73) at the spliced position are arranged in an encrypted manner;
the cantilever sealing beam (8) is provided with a cantilever upper sealing beam (81) and a cantilever lower sealing beam (82) at the end parts of the first and second cantilever units (4, 5) of the skylight, a cantilever sealing beam connecting piece (21) is connected between the cantilever upper sealing beam (81) and the cantilever lower sealing beam (82), and the height of the cantilever lower sealing beam (82) is lower than that of the cantilever upper sealing beam (81); the overhanging lower sealing beam (82), the corresponding overhanging main beam (7) and the overhanging secondary beam (9) form a skylight first overhanging unit (4) or a skylight second overhanging unit (5).
2. A continuous overlength overhanging steel structure belt as claimed in claim 1, characterized in that the structure sealing beam (11) is connected with structure projecting beams (13) at intervals, the structure projecting beams (13) are correspondingly connected with the structure beams (14), and the structure columns (15) are arranged below the structure beams (14) at intervals;
the overhanging main beam (7) is arranged along the structure extending beam (13).
3. The continuous overlength cantilever steel structure belt according to claim 2, wherein the cantilever beam body (71) is an I-shaped beam body, the cross section of the cantilever beam body (71) is gradually reduced from a fixed end to a cantilever end, a connecting plate is connected to the cantilever beam body (71) in advance, and the cantilever secondary beam (9) and the corner secondary beam (10) are connected through the connecting plate.
4. The continuous overlength cantilever steel structure belt according to claim 1, wherein the cantilever main beams (7) at the middle parts of the first cantilever unit (4) and the second cantilever unit (5) of the skylight are spliced with an A shape, an H shape or a U shape, and the beam body at the corresponding opening extends into the structure body and is correspondingly and integrally connected with the beam body of the skylight of the structure body.
5. The continuous overlong overhanging steel structure belt according to claim 1, characterized in that an overhanging sealing beam (8) of a hall first overhanging unit (1), a hall second overhanging unit (2), a skylight first overhanging unit (4), a skylight second overhanging unit (5) and an entrance overhanging unit (6) are arranged in an arc smooth manner, and the overhanging sealing beam (8) at the corner reinforcing unit (3) and the overhanging main beam (7) are integrally arranged in a trapezoid manner;
the angle reinforcing unit (3) is provided with overhanging angle columns (18) at intervals, and overhanging bifurcation beams (19) and overhanging angle fold line beams (20) are connected to the overhanging angle columns (18).
6. A continuous overlength overhanging steel structure band as claimed in claim 5, characterized in that the overhanging bifurcated beam (19) is a Y-beam, one end of the two branches of the Y-beam bifurcation is connected with the structure sealing column (12), and the other end is connected with the overhanging secondary beam (9); one side of the single branch of the Y-shaped beam extends out and is connected to the overhanging girder (7) around the corner reinforcing unit (3).
7. The continuous overlong overhanging steel structure belt as claimed in claim 6, characterized in that the overhanging angle folding line beam (20) is connected to the overhanging main beam (7), the overhanging main beam (7) of the overhanging angle folding line beam (20) corresponding to the height dislocation is arranged in a folding line shape in the height direction, and the overhanging end of the overhanging angle folding line beam (20) is connected to the peripheral overhanging main beam (7) of the angle reinforcing unit (3).
8. A continuous overlength cantilever steel structure belt according to claim 1, characterized in that the cantilever sealing beam connecting piece (21) is an H-shaped piece, the bottom of the H-shaped piece is connected with a trapezoid connecting plate, the trapezoid connecting plate is correspondingly connected with the cantilever lower sealing beam (82), and a stiffening rib plate is arranged on the H-shaped piece vertically.
9. A continuous overlength overhanging steel structure belt as claimed in claim 2, characterized in that the fixed end of the overhanging girder (7) is connected to the structure sealing posts (12), the structure sealing girders (11) are connected between adjacent structure sealing posts (12); the structure sealing beams (11) are arranged in a zigzag shape, and the height of the structure sealing beams (11) is larger than that of the overhanging main beams (7); the structural sealing beam (11) is an I-shaped beam, and the middle part of the web plate is provided with a middle flat plate and vertical edges in the long direction.
10. A method of installing a continuous, overlength overhanging steel structural band as claimed in any one of claims 1 to 9, characterized by the specific steps of:
step one, after the structural columns (15), the structural beams (14), the structural sealing columns (12) and the structural extension beams (13) are installed, dividing the overhanging steel structure belt into sections;
step two, dividing the section into sections, wherein temporary support columns (16) are arranged below the overhanging beam band at intervals according to the structural characteristics of each unit of the overhanging steel structure band and the construction site condition, the temporary support is used for temporary fixation when the overhanging steel structure band is installed, and the overhanging structure between the adjacent support columns is divided into a section; wherein temporary support columns (16) are arranged at the dividing points of the units, and temporary support columns (16) are arranged at the large turning points and the corners;
thirdly, carrying out construction checking on the support of the temporary support column (16) of the overhanging steel structure belt, establishing a finite element analysis model according to the overhanging steel structure belt, assuming load and boundary conditions, calculating by adopting special analysis software to obtain structural internal force, stress and displacement results, judging the safety, if the safety meets the requirement, setting the support position, if the safety does not meet the requirement, adjusting the support position, and carrying out checking again until the construction safety meets the requirement;
hoisting the temporary support column (16) of the nth section, installing the overhanging main beam (7), the overhanging sealing beam (8) and the overhanging secondary beam (9), installing the corner secondary beam (10) at the position with the corner secondary beam (10), and then finishing the nth section; thus, constructing the (n+1) th section; wherein n is 1 or more;
step five, according to the installation sequence of the step four, when the construction of the nth section is completed, removing the temporary support column (16) of the nth section, and using the removed temporary support column (16) for the construction of the (n+2) th section; removing the temporary support column (16) of the (n+1) th section after the construction of the (n+1) th section is completed, and using the removed temporary support column (16) for the construction of the (n+3) th section; sequentially circulating until the integral construction of the continuous overlength overhanging steel structure belt is finished;
and step six, or synchronously constructing in each unit for the construction in the interval from the step four to the step five, reserving joints at the splicing positions of each unit, and finally splicing and folding, thereby completing the construction of the continuous overlength overhanging steel structure belt.
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| EP3440277A2 (en) * | 2016-04-08 | 2019-02-13 | Wilhelm Layher Verwaltungs-GmbH | Flexurally rigid corner construction for the support structure of a keder roof hall |
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| CN219080581U (en) * | 2022-12-06 | 2023-05-26 | 同济大学建筑设计研究院(集团)有限公司 | Radial large cantilever Liang Zhuzi structure |
| CN116356947A (en) * | 2023-05-06 | 2023-06-30 | 中国建筑西南设计研究院有限公司 | Hollow grid ultra-long sightseeing platform and overhanging large-span awning integrated structure |
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2023
- 2023-07-11 CN CN202310844047.5A patent/CN116575583B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3440277A2 (en) * | 2016-04-08 | 2019-02-13 | Wilhelm Layher Verwaltungs-GmbH | Flexurally rigid corner construction for the support structure of a keder roof hall |
| CN113931314A (en) * | 2021-09-17 | 2022-01-14 | 中国航空规划设计研究总院有限公司 | Petal-shaped body decorative structure capable of releasing temperature stress and building |
| CN217269133U (en) * | 2022-03-15 | 2022-08-23 | 中建二局安装工程有限公司 | Steel structure stadium structure with Y-shaped stand column |
| CN219080581U (en) * | 2022-12-06 | 2023-05-26 | 同济大学建筑设计研究院(集团)有限公司 | Radial large cantilever Liang Zhuzi structure |
| CN116025157A (en) * | 2023-02-17 | 2023-04-28 | 中国建筑第六工程局有限公司 | Formwork supporting method for arc-shaped corner of high-rise cantilever beam plate structure |
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| CN116575583B (en) | 2023-09-22 |
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