CN114837483B - High-low span portal steel frame building structure and construction process thereof - Google Patents
High-low span portal steel frame building structure and construction process thereof Download PDFInfo
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- CN114837483B CN114837483B CN202210467535.4A CN202210467535A CN114837483B CN 114837483 B CN114837483 B CN 114837483B CN 202210467535 A CN202210467535 A CN 202210467535A CN 114837483 B CN114837483 B CN 114837483B
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Abstract
The application relates to a high-low span portal steel frame building structure and a construction process thereof, and relates to the technical field of building engineering, wherein the steel frame building structure comprises a vertical wall, a tree-shaped supporting column, a ridge ring beam, a roof inclined radial main rod and a roof radial main rod, wherein the roof inclined radial main rod and the roof radial main rod are respectively distributed on two sides of the ridge ring beam, and the upper end of the roof inclined radial main rod and one end of the roof radial main rod are connected to the ridge ring beam; the tree-shaped support columns are positioned below the roof ridge ring beams and the roof inclined radial main rods, and the upper ends of the tree-shaped support columns are connected with the roof ridge ring beams and/or the roof inclined radial main rods; the lower end of the roof inclined radial main rod is connected to a vertical wall; and a horizontal support rod is also connected between the two adjacent roof inclined radial main rods. The application also provides a construction process of the steel frame building structure. The method has the advantages of high assembly positioning precision, low building construction cost and the like.
Description
Technical Field
The application relates to the technical field of large public buildings, in particular to a high-low span portal steel frame building structure and a construction process thereof.
Background
With the development of economic technology and the popularization of the green building by the country, the steel frame building structure is used as an assembled building, and has the unique advantage in the aspect of green building. In recent years, the development of steel frame building structures is rapid, and the steel frame building structures become the first choice of buildings such as a plurality of workshops, theatres, stadiums and the like, and especially in large-span structures and irregular space structures, the steel frame building structures gradually become the main stream choice in structural design due to high plasticity, strong shape molding capability and high construction speed.
With the development of the age, people have more and more requirements on building modeling, and the existing plane roof cannot meet the requirements of building design, so that the inclined roof or curved roof design occupies higher and higher proportion in the existing design. In the existing curved roof design, the problems that the structural design cannot perfectly meet the requirements of the building design, the processing difficulty of the space irregular curved surface member is high, the processing cost is high and the precision cannot meet often exist; and the processing and mounting precision of the steel member has larger influence on the final molding appearance and the stress working condition of the steel structure.
At present, large-span single public buildings such as sports training halls, exhibition halls, large-scale casinos and the like have short-side spans of 30-42 m, and most of the single-layer buildings are single-layer buildings with light steel roofs, so that the construction method is extremely unfavorable for saving land, and can lead to the phenomenon of fat beam and column by adopting a conventional prestressed concrete frame structure, and meanwhile, the problems of slow casting construction progress and difficult improvement of the civilization degree of construction on the concrete site are solved, and finally the cost is increased, so that the requirements of energy conservation, emission reduction and low-carbon economy are not met.
Disclosure of Invention
The purpose of the application is to provide a high-low span portal steel frame building structure and a construction process thereof, and the problems of high construction cost and high assembly difficulty of the large-span steel frame building structure are solved.
In a first aspect, the present application provides a high-low span portal steel frame building structure, which adopts the following technical scheme:
the high-low span portal steel frame building structure comprises a vertical wall, a ridge ring beam, a plurality of tree-shaped supporting columns, a plurality of roof inclined radial main rods and a plurality of roof radial main rods, wherein the roof inclined radial main rods and the roof radial main rods are respectively distributed on two sides of the ridge ring beam, and the upper ends of the roof inclined radial main rods and one ends of the roof radial main rods are connected to the ridge ring beam; the tree-shaped support columns are positioned below the ridge ring beams and the roof inclined radial main rods, and the upper ends of the tree-shaped support columns are connected with the ridge ring beams and/or the roof inclined radial main rods; the lower end of the roof inclined radial main rod is connected to the vertical wall; and a horizontal support rod is also connected between the two adjacent roof inclined radial main rods.
The high-low span portal steel frame building structure is matched with a concrete structure for installation, the concrete structure adopts a layer-by-layer platform withdrawal design, a ridge ring beam, a roof radial main rod, a roof inclined radial main rod and a horizontal support rod form a single-layer irregular steel grid structure, and the steel grid structure can be wrapped with a curtain wall enclosure structure, such as a glass curtain wall or a metal curtain wall. By adopting the technical scheme, a through-height large space is formed in the high-low span portal steel frame building structure, so that the requirement of using functions is met; the bearing structure of the finally installed curtain wall enclosure structure is a steel grid structure formed by a ridge ring beam, a roof radial main rod, a roof inclined radial main rod and a horizontal support rod, one end of the steel grid structure is supported on a concrete structure roof by a tree-shaped support column, and the other end of the steel grid structure is supported by a vertical wall. The steel frame building structure is suitable for a structural system with large space, high integral requirement, high span, low span and light weight, and has a light structural form which is simpler than the arrangement of truss structural members; through the tree-shaped support column arrangement of the high end and the low end, a larger space can be spanned, and the whole space effect is good. The roof inclined radial main rods are connected through the horizontal support rods to form an integral structure, so that the shock resistance is more excellent; the number of steel members used in the whole building structure design is small, the assembly is simple, the construction period is short, and the building cost is reduced.
Optionally, the vertical wall and the tree-shaped support column are both made of steel structures; a tree-shaped support column is also arranged below the radial roof main rod, and the radial roof main rod is connected with the upper end of the corresponding tree-shaped support column; a horizontal support rod is also connected between two adjacent roof radial main rods.
By adopting the technical scheme, the length dimension of the roof radial main rod can be made larger, so that the horizontal space area of a single building is extended, the building area and the space volume are increased, meanwhile, a horizontal pulling force can be generated on the roof ridge ring beam through the roof radial main rod, the horizontal pulling force is balanced with the side stress generated on the roof ridge ring beam by the roof inclined radial main rod, the horizontal pressure generated on a vertical wall by the roof inclined radial main rod is reduced, and the stability and the reliability of the integral structure are improved.
Optionally, the vertical wall comprises a plurality of vertically arranged door steel columns; all the door steel columns are arranged at intervals, the upper ends of two adjacent door steel columns are fixedly connected through a connecting steel rod, and the lower ends of the door steel columns are fixedly connected to the concrete ground through a fixed hinge support or an elastic hinge support.
By adopting the technical scheme, the vertical wall adopts the door steel columns which are arranged at intervals, so that the integral visual effect can be ensured; the stable reliability of the vertical wall can be ensured by arranging the connecting steel rod.
Optionally, the lower ends of the tree-shaped support columns are respectively fixedly connected to floors with different elevations on the high-rise concrete ground through sliding hinge supports or elastic hinge supports or fixed hinge supports; the upper end of the tree-shaped support column is connected with the roof ridge ring beam and the roof inclined radial main rod by adopting pin shaft nodes.
By adopting the technical scheme, the proper support is selected, the influence on the main structure is controllable, and no more additional stress is generated. As a preferable scheme, the lower ends of the tree-shaped support columns are fixedly connected to the high-rise concrete ground through sliding hinge supports. The whole steel grid structure is arranged in a cross-layer manner; the demand of vertical force and horizontal force can be born to the arborescent support column in this application, compromise frivolous effect simultaneously, arborescent support column and vertical wall cooperation, and both form a plurality of single pin high and low portal steelframe building structure with roof ridge ring beam and the radial mobile jib of roofing slope, can regard as many pin high and low portal steelframe building structure after linking firmly through horizontal branch between the radial mobile jib of adjacent roofing slope, and this kind of component combination compromise the atress characteristics of "roof beam" and "post" on traditional meaning simultaneously: the horizontal component bears the bending moment and the axial force (similar to a diagonal column), and the vertical component bears the axial force and balances the bending moment transmitted by the ridge ring beam; the steel frame building structure is ensured to form a through-height large space and has enough stability and reliability.
Optionally, the horizontal strut is a round steel tube or a square steel tube; the horizontal support rods are fixedly connected with the roof inclined radial main rod by welding.
Through adopting above-mentioned technical scheme, the coordination deformation between the radial mobile jib of roof slope and between the radial mobile jib of roof can be guaranteed to horizontal branch, forms the space and atress system jointly to can bear pressure again can bear the pulling force, improve holistic stability. Meanwhile, the horizontal support rods are connected with the roof inclined radial main rod and the roof inclined radial main rod through welding, so that construction is convenient, connection is firm, and effective transmission of force and indoor effect of a building are guaranteed. Preferably, the welding process adopts full penetration split welding, the nodes and the main parts are controlled at a first-stage welding seam, and the other parts are controlled at a second-stage welding seam.
Optionally, the door steel column and the ridge ring beam adopt square steel pipes, and the tree-shaped support column adopts round steel pipes.
By adopting the technical scheme, the main rod piece can resist bending moment and bear axial force, and meanwhile, the door steel column and the ridge ring beam are convenient to attach to the outer surface of the building.
In a second aspect, the construction process of the high-low span portal steel frame building structure provided by the application adopts the following technical scheme:
a construction process of a high-low span portal steel frame building structure comprises the following steps:
s1, setting a vertical wall and a plurality of temporary geotechnical steel pipe support columns;
s2, mounting the ridge ring beam on a temporary geotechnical steel pipe support column in a segmented mode;
s3, each section of ridge ring beam is installed, a roof radial main rod and a roof inclined radial main rod are respectively installed on two sides of the ridge ring beam, one end of the roof radial main rod and one end of the roof inclined radial main rod are respectively fixedly connected to butt joint brackets on two sides of the corresponding ridge ring beam, and the other end of the roof inclined radial main rod is fixedly connected to the upper end of a vertical wall;
s4, horizontal support rods are arranged between the adjacent roof inclined radial main rods and between the adjacent roof radial main rods;
s5, installing a plurality of tree-shaped support columns below the ridge ring beams and the roof inclined radial main rods, wherein the upper ends of the tree-shaped support columns are connected to the corresponding ridge ring beams and the corresponding roof inclined radial main rods through pin roll nodes;
s6, unloading the temporary geotechnical steel pipe support column.
By adopting the technical scheme, the construction procedure is optimized, and the fixed temporary geotechnical steel pipe support column is used for replacing the movable roof inclined support, so that the problem of structural stability in the construction process is effectively solved; the roof ridge ring beam which is originally a secondary beam is firstly installed, a stable reference is provided for the installation and positioning of the roof inclined radial main rod serving as the main beam, and the installation precision is better ensured, so that the construction of the whole steel frame building structure is safer and more efficient.
Optionally, before the step S1, a concrete floor and a concrete backing floor matched with the high-low span portal steel frame building structure are required to be poured, and a plurality of steel embedded parts are pre-buried when the concrete floor and the concrete backing floor are subjected to pouring construction; before installing the vertical wall, installing a hinged support for fixedly connecting the vertical wall on the corresponding steel embedded part; before installing the tree-shaped support column, installing a hinged support for fixedly connecting the tree-shaped support column on the corresponding steel embedded part.
By adopting the technical scheme, the rapid installation and fixation of the steel frame building structure are realized. In the technical scheme, the hinged support is installed by adopting a tower crane, the maximum weight of a single hinged support is about 2 tons, and the lifting capacity of the on-site tower crane meets the lifting requirement; and hoisting the hinged support on the steel embedded part by using a tower crane, and welding a welding seam between the hinged support and the steel embedded part after the hinged support is positioned and confirmed according to the positioning coordinates of the hinged support.
Optionally, in the step S1, the temporary geotechnical steel pipe support column is a standard member and is divided into standard lengths of 6m, 5m, 4m, 3m, 2m, 1m and 0.5m, and the lower end of the temporary geotechnical steel pipe support column is abutted to the corresponding steel embedded part by adopting a hexagonal bolt flange plate node; the upper ends of two adjacent temporary geotechnical steel pipe support columns are connected by adopting a connecting steel beam, or the upper end of each temporary geotechnical steel pipe support column is provided with a wind cable.
Through adopting above-mentioned technical scheme, interim geotechnique's steel pipe support column is installed according to building design drawing location, need not on-the-spot measurement cutting, and convenient direct use has accelerated the engineering progress to each interim geotechnique's steel pipe support column length dimension's precision has been guaranteed. The temporary geotechnical steel pipe support column is ensured to be stable in the construction process by pulling the connecting steel beam or the wind cable. Further, according to the different supporting counter forces of the temporary geotechnical steel pipe support columns, the lower layer of the concrete structure corresponding to the temporary geotechnical steel pipe support column with larger stress needs to be reinforced by jacking.
Optionally, in the step S1, a negative differential plate and a limit baffle are disposed at the top end of the temporary geotechnical steel tube support column; the ridge ring beam is arranged on the negative difference plate, and the side part of the ridge ring beam is limited by arranging a limiting baffle.
By adopting the technical scheme, the accuracy and stability of the roof ridge ring beam installation are ensured; the limit baffle is arranged in combination with the bending angle of the ring beam.
Optionally, in the step S4, the horizontal support rod is fixedly connected with the roof inclined radial main rod and the horizontal support rod is fixedly connected with the roof inclined radial main rod through welding; the welding is full penetration split welding.
Through adopting above-mentioned technical scheme, can enough make things convenient for quick connect, can guarantee the steady reliability of connection again, and it is more pleasing to the eye.
Optionally, the hinge support used for fixedly connecting the vertical wall is a fixed hinge support or an elastic hinge support; the hinge support used for fixedly connecting the tree-shaped support column is an elastic hinge support or a sliding hinge support; the elastic hinge support and the sliding hinge support are temporarily locked in the installation stage and then are opened after the whole steel frame building structure is integrally formed.
By adopting the technical scheme, the position change generated in the installation process is effectively prevented, so that the accurate reliability of the assembly of each component is ensured. In the technical scheme, in the process of assembling the elastic hinge support or the sliding hinge support with corresponding components, limiting measures are taken for the rotation angle and the displacement of the hinge support, the temporary limiting steel plates can be welded and fixed, after the whole steel frame building structure is assembled, the temporary limiting steel plates are cut off before the temporary geotechnical steel pipe support columns are unloaded, and the rotation angle and the displacement deformation capacity of the hinge support are recovered, so that the design requirements are met.
Optionally, before the step S1, performing simulation analysis on the whole steel structure of the steel frame building structure through finite element analysis software MIDAS, selecting a member with larger stress in a calculation result as a monitoring object, and arranging a plurality of monitoring points; the monitoring points are arranged at the same positions on two sides of the component, stress change data monitored by the monitoring points are transmitted to the terminal platform in a wireless mode, and 24-hour automatic monitoring is achieved.
By adopting the technical scheme, the reliability of the monitoring data is ensured, thereby providing guarantee for the subsequent construction and engineering quality.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the steel frame building structure can span larger space through the arrangement of the tree-shaped support columns at the high end and the low end, has good overall space effect, and simultaneously has the structural characteristics of high-low span and light weight.
2. The roof inclined radial main rods and the roof inclined radial main rods in the steel frame building structure are connected through the horizontal support rods to form an integral structure, and the shock resistance is more excellent.
3. The steel frame building structure has a light structure form, and is simpler than the arrangement of truss structure rods; the number of steel members used in the whole building structure design is small, the assembly is simple, the construction period is short, and the building cost is reduced.
4. By selecting a proper hinged support in the steel frame building structure, the influence on the main body structure is controllable, and no more additional stress is generated.
5. Through optimizing construction process among this high low door-type steel frame building structure's the construction process that strides, through setting up interim geotechnique steel pipe support column, install earlier and be the roof ridge ring roof beam of secondary beam, for the radial mobile jib installation location of roof slope as the girder provides stable benchmark, better assurance installation accuracy for the construction of whole steel frame building structure is safer, high-efficient.
Drawings
Fig. 1 is a schematic overall structure of embodiment 1 of the present application.
Fig. 2 is an enlarged partial schematic view at a in fig. 1.
Fig. 3 is a schematic view of a connection structure of a vertical wall and a roof inclined radial main rod in embodiment 1 of the present application.
Fig. 4 is a schematic flow chart of the construction process in example 2 of the present application.
Fig. 5 is a schematic view of a temporary support structure of a door steel column in example 2 of the present application.
Fig. 6 is a schematic view of the installation structure of the temporary geotechnical steel pipe support column in embodiment 2 of the present application.
Fig. 7 is a schematic view of the installation structure of the temporary geotechnical steel pipe support column in embodiment 2 of the present application.
In the figure, 1, a vertical wall; 1a, a door steel column; 1b, connecting a steel rod; 2. tree-shaped support columns; 3. roof ridge ring beams; 3a, butting corbels; 4. roof inclined radial main rod; 5. roof radial main rod; 6. a horizontal strut; 7. a concrete floor; 8. a steel embedded part; 9. a hinged support; 10. connecting steel beams; 11. a wind cable; 12. a negative differential plate; 13. a limit baffle; 14. temporary section steel diagonal bracing; 15. temporary geotechnical steel pipe support column.
Detailed Description
The present application is described in further detail below with reference to fig. 1-7.
Example 1:
the embodiment discloses a high-low span portal steelframe building structure, this high-low span portal steelframe building structure cooperation concrete structure installs and uses, and the concrete structure adopts layer upon layer to move back the platform design. Referring to fig. 1 and 2, the high-low span portal steel frame building structure comprises a vertical wall 1, a plurality of tree-shaped supporting columns 2, at least one ridge ring beam 3, a plurality of roof inclined radial main rods 4 and a plurality of roof radial main rods 5, wherein the roof inclined radial main rods 4 and the roof radial main rods 5 are respectively distributed on two sides of the ridge ring beam 3, butt joint brackets 3a are preset on two sides of the ridge ring beam 3, the upper ends of the roof inclined radial main rods 4 are connected to one side of the ridge ring beam 3 through the corresponding butt joint brackets 3a, and one ends of the roof radial main rods 5 are connected to the other side of the ridge ring beam 3 through the corresponding butt joint brackets 3 a; the tree-shaped support columns 2 are positioned below the ridge ring beam 3 and the roof inclined radial main rod 4, and the upper ends of the tree-shaped support columns 2 are connected with the ridge ring beam 3 and/or the roof inclined radial main rod 4; the lower end of the roof inclined radial main rod 4 is connected to the vertical wall 1; a horizontal support rod 6 is also connected between the two adjacent roof inclined radial main rods 4; tree-shaped support columns 2 are also arranged below the radial roof main rods 5, and the radial roof main rods 5 are connected with the upper ends of the corresponding tree-shaped support columns 2; a horizontal strut 6 is also connected between two adjacent roof radial main bars 5. The steel frame building structure is suitable for a structural system with large space, high integral requirement, high span, low span and light weight, and has a light structural form which is simpler than the arrangement of truss structural members; through the tree-shaped support column 2 arrangement of the high end and the low end, a larger space can be spanned, and the whole space effect is good. The roof inclined radial main rods 4 are connected through the horizontal support rods 6 to form an integral structure, so that the shock resistance is more excellent; the number of steel members used in the whole steel frame building structure design is small, the assembly is simple, the construction period is short, and the building cost is reduced.
Specifically, referring to fig. 3, the vertical wall 1 includes a plurality of vertically arranged door steel columns 1a; all the door steel columns 1a are arranged at intervals, the upper ends of two adjacent door steel columns 1a are fixedly connected through a connecting steel rod 1b, and the lower ends of the door steel columns 1a are fixedly connected to a concrete floor 7 through a fixed hinge support or an elastic hinge support; the vertical wall 1 adopts the door steel columns 1a which are arranged at intervals, so that the integral visual effect can be ensured; the stable reliability of the vertical wall 1 can be ensured by arranging the connecting steel rod 1 b.
In the embodiment, the vertical wall 1 and the tree-shaped support column 2 are both made of steel structures; the door steel column 1a and the ridge ring beam 3 adopt square steel pipes, and the tree-shaped support column 2 adopts round steel pipes; the horizontal strut 6 is a round steel pipe or a square steel pipe; the horizontal support rod 6 is fixedly connected with the roof inclined radial main rod 4 and the horizontal support rod 6 is fixedly connected with the roof inclined radial main rod 5 by welding. Specifically, the welding process adopts full penetration split welding, the nodes and the main parts are controlled to be primary welding seams, and the other parts are controlled to be secondary welding seams; the horizontal support rods 6 can ensure the coordinated deformation between the roof inclined radial main rods 4 and between the roof radial main rods 5 to form a space joint stress system, so that the roof inclined radial main rods can bear pressure and tension, the overall stability is improved, meanwhile, the connection is convenient to construct by the welding process, the connection firmness can be ensured, and the effective transmission of force and the indoor effect of a building are ensured; the shape of the door steel column 1a and the ridge ring beam 3 is convenient for fitting the building outer skin on the surface.
In the embodiment, the tree-shaped support columns 2 are distributed on floors (concrete landing floors) with different elevations on a high-rise concrete ground 7, and the lower ends of the tree-shaped support columns 2 are fixedly connected on the concrete landing floors through sliding hinge supports or elastic hinge supports or fixed hinge supports; the upper end of the tree-shaped support column 2 is connected with a roof ridge ring beam 3 and a roof inclined radial main rod 4 by adopting pin shaft nodes. By selecting a suitable hinge support 9, the influence on the main structure is controllable, without generating further additional stresses.
Through economic analysis, in order to reduce the influence of additional rigidity brought to the main body structure by the cross-layer large-span steel roof structure in the embodiment, as a preferred scheme: the lower end of the door steel column 1a is fixedly connected to the concrete floor 7 through a fixed hinge support, and the lower end of the tree-shaped support column 2 is fixedly connected to the high-rise concrete floor 7 through an elastic hinge support. The influence of overlarge rigidity of the hinged support 9 caused by bending deformation of the upper steel structure can be effectively reduced, and meanwhile, the horizontal deformation of the hinged support is fixed, so that the influence on the indoor effect of a people flow passage is reduced; the tree-shaped support column 2 is located at a high position, and an elastic hinged support is adopted, so that the influence of partial temperature stress on a main body structure can be released, the whole horizontal displacement can be ensured not to be too large, and the deformation requirement of an upper curtain wall can be met. In this embodiment, the whole steel grid structure is arranged in a cross-layer manner, the tree-shaped support columns 2 can bear the demands of vertical force and horizontal force, meanwhile, the light and thin effects are considered, the tree-shaped support columns 2 are matched with the vertical wall 1, the tree-shaped support columns 2 and the ridge ring beam 3 and the roof inclined radial main rods 4 form a plurality of single-truss high-low portal steel frame building structures, the adjacent roof inclined radial main rods 4 are fixedly connected through the horizontal support rods 6 and then can be regarded as a multi-truss high-low portal steel frame building structure, and the combination of the components simultaneously takes account of the stress characteristics of the beams and the columns in the traditional sense: the horizontal component bears the bending moment and the axial force (similar to a diagonal column), and the vertical component bears the axial force and balances the bending moment transmitted by the ridge ring beam 3; the building structure is ensured to form a through high space and has enough stability and reliability.
The implementation principle of the embodiment of the application is as follows: the ridge ring beam 3, the roof radial main rod 5, the roof inclined radial main rod 4 and the horizontal support rods 6 form a single-layer irregular steel grid structure, and the steel grid structure can wrap curtain wall enclosure structures, such as installation glass curtain walls or metal curtain walls. By adopting the technical scheme, a through-height large space is formed in the high-low span portal steel frame building structure, so that the requirement of using functions is met; the bearing structure of the finally installed curtain wall enclosure structure is a steel grid structure formed by a ridge ring beam 3, a roof radial main rod 5, a roof inclined radial main rod 4 and a horizontal support rod 6, one end of the steel grid structure is supported on a concrete structure roof by a tree-shaped support column 2, and the other end of the steel grid structure is supported by a vertical wall 1, so that the earthquake resistance is excellent; the number of steel members used in the whole steel frame building structure design is small, the assembly is simple, the construction period is short, and the building cost is reduced.
In this embodiment, since the tree-shaped support column 2 is also arranged below the radial roof main rod 5 to support the radial roof main rod 5, the length of the radial roof main rod 5 can be made larger, so that the horizontal space area of a single building can be extended, the building area and the space volume can be increased, meanwhile, a horizontal pulling force can be generated on the ridge ring beam 3 through the radial roof main rod 5, the horizontal pulling force is balanced with the side stress generated on the ridge ring beam 3 by the radial roof inclined main rod 4, the horizontal pressure generated on the vertical wall 1 by the radial roof inclined main rod 4 is reduced, and the stability and the reliability of the whole structure are improved.
Example 2:
the embodiment discloses a construction process of a high-low span portal steel frame building structure, which is used for constructing the same or similar high-low span portal steel frame building structure in the embodiment 1, and referring to fig. 4, the construction process in the embodiment comprises the following steps:
s1, setting a vertical wall 1 and a plurality of temporary geotechnical steel pipe support columns 15;
s2, mounting the ridge ring beam 3 on the temporary geotechnical steel pipe support column 15 in a segmented manner;
s3, each section of ridge ring beam 3 is installed, a roof radial main rod 5 and a roof inclined radial main rod 4 are respectively installed on two sides of the ridge ring beam, one end of the roof radial main rod 5 is fixedly connected to a butt joint bracket 3a on one side of the ridge ring beam 3, one end of the roof inclined radial main rod 4 is fixedly connected to a butt joint bracket 3a on the other side of the ridge ring beam 3, and the other end of the roof inclined radial main rod 4 is fixedly connected to the upper end of the vertical wall 1;
s4, horizontal support rods 6 are arranged between the adjacent roof inclined radial main rods 4 and between the adjacent roof radial main rods 5;
s5, installing a plurality of tree-shaped support columns 2 below the ridge ring beams 3 and the roof inclined radial main rods 4, wherein the upper ends of the tree-shaped support columns 2 are connected to the corresponding ridge ring beams 3 and the corresponding roof inclined radial main rods 4 through pin shaft nodes;
s6, unloading the temporary geotechnical steel pipe support column 15.
Furthermore, in the embodiment, before formal construction, finite element analysis software MIDAS can be utilized to carry out simulation analysis on the steel frame building structure, a member with larger stress in a calculation result is selected as a monitoring object, and a plurality of monitoring points are arranged; the monitoring points are arranged at the same positions on two sides of the component, stress change data monitored by the monitoring points are wirelessly transmitted to the terminal platform, and 24-hour automatic monitoring is realized;
before the step S1, a concrete floor 7 and a concrete withdrawal floor matched with the high-low span portal steel frame building structure are required to be poured, and a plurality of steel embedded pieces 8 are pre-buried when the concrete floor 7 and the concrete withdrawal floor are subjected to pouring construction; before the vertical wall 1 is installed, a hinged support 9 for fixedly connecting the vertical wall 1 is installed on the corresponding steel embedded part 8; before the tree-shaped support column 2 is installed, a hinge support 9 for fixedly connecting the tree-shaped support column 2 is installed on the corresponding steel embedded part 8.
In the above step S1, as a preferable scheme, referring to fig. 5, when installing the vertical wall 1, the vertical wall 1 is assembled and processed into an assembled unit by adopting the door steel column 1a and the connecting steel rod 1b, and then assembled, the lower end of the door steel column 1a is welded with the hinge support 9, and the upper end of the door steel column 1a can be fixed by adopting a steel wire rope cable wind or a temporary steel diagonal bracing.
In the step S1, the temporary geotechnical steel pipe support column 15 is a standard member and is divided into standard lengths of 6m, 5m, 4m, 3m, 2m, 1m and 0.5 m; referring to fig. 6 and 7, the lower ends of the temporary geotechnical steel pipe support columns 15 are butted on the corresponding steel embedded parts 8 by adopting hexagonal bolt flange plate nodes; the top of interim geotechnique steel pipe support column 15 sets up negative differential plate 12 and limit baffle 13, and roof beam 3 installs on negative differential plate 12 and the lateral part of roof beam 3 carries out spacingly through installation limit baffle 13. The temporary geotechnical steel pipe support columns 15 are positioned and installed according to the building design drawing, and are not required to be cut in site measurement, so that the temporary geotechnical steel pipe support columns are convenient to use directly, the engineering progress is accelerated, and the accuracy of the length dimension of each temporary geotechnical steel pipe support column 15 is guaranteed. Further, according to the different supporting counter forces of the temporary geotechnical steel pipe support columns 15, the lower layer of the concrete structure corresponding to the temporary geotechnical steel pipe support column 15 with larger stress needs to be reinforced by jacking.
Referring to fig. 6, as an alternative, the upper end of each temporary geotechnical steel pipe support column 15 is provided with a wind cable 11; referring to fig. 7, as another alternative, the upper ends of two adjacent temporary geotechnical steel pipe support columns 15 are pulled and connected by using a tie steel beam 10. The temporary geotechnical steel pipe support column 15 is ensured to be stable in the construction process by pulling or installing the wind through the connecting steel beam 10.
In the step S4, the horizontal support rods 6 are fixedly connected with the roof inclined radial main rod 4 and the horizontal support rods 6 are fixedly connected with the roof radial main rod 5 through welding; the welding is full penetration split welding. Therefore, the connection can be conveniently and quickly connected, the stability and the reliability of the connection can be ensured, and the connection is attractive.
The hinge support 9 for fixedly connecting the vertical wall 1 in the embodiment is a fixed hinge support or an elastic hinge support; the hinged support 9 for fixedly connecting the tree-shaped support column 2 is an elastic hinged support or a sliding hinged support; the elastic hinge support and the sliding hinge support are temporarily locked in the installation stage and then are opened after the whole steel frame building structure is integrally formed. Therefore, position variation generated in the installation process can be effectively prevented, and the accurate reliability of assembly of each component is ensured. In the embodiment, the hinged support 9 is installed by adopting a tower crane, the maximum weight of the single hinged support 9 is about 2 tons, and the lifting capacity of the field tower crane meets the lifting requirement; and hoisting the hinged support 9 on the steel embedded part 8 by using a tower crane, and welding a welding seam between the hinged support 9 and the steel embedded part 8 after the hinged support 9 is positioned and confirmed to be correct according to the positioning coordinates of the hinged support 9.
Further, in the present embodiment, in the process of assembling the elastic hinge support or the sliding hinge support with the corresponding components, a limiting measure is taken for the rotation angle and displacement of the hinge support 9, and the temporary limiting steel plate can be welded and fixed, after the whole steel frame building structure is assembled, the temporary limiting steel plate is cut off before the temporary geotechnical steel pipe support column 15 is unloaded, and the rotation angle and displacement deformability of the hinge support 9 is recovered, thereby meeting the design requirement.
After the scheme in the embodiment is tested and the temporary geotechnical steel pipe support column 15 is unloaded, the stress variation value of each main component is within 10MPa, is smaller than the design value of the material strength and tends to be stable.
The implementation principle of the embodiment of the application is as follows: aiming at a large-span inclined free-form surface single-layer steel grid structure, a novel construction technology is provided, the technology can be simply described as a mode of 'temporary geotechnical steel pipe support column 15 support, roof ridge ring beam 3 positioning and main rod reverse installation', in the construction technology, the temporary geotechnical steel pipe support column 15 is supported under the roof ridge ring beam 3, and no temporary support is arranged under the roof inclined radial main rod 4; firstly, mounting a roof ridge ring beam 3, dividing a roof radial main rod into a roof inclined radial main rod 4 and a roof radial main rod 5 by taking the roof ridge ring beam 3 as a boundary, and arranging a butt joint bracket 3a on the roof ridge ring beam 3 in advance for respectively positioning and mounting the roof inclined radial main rod 4 and the roof radial main rod 5; the tree-shaped support column 2 is finally installed, so that pin shaft nodes between the tree-shaped support column 2 and the roof ridge ring beam 3 and the roof inclined radial main rod 4 do not bear load before the whole building structure is formed in a connecting mode and the temporary geotechnical steel pipe support column 15 is unloaded; by adopting the technical scheme, the construction procedure is optimized, and the fixed temporary geotechnical steel pipe support column 15 is used for replacing a movable roof diagonal support, so that the problem of structural stability in the construction process is effectively solved; the roof ridge ring beam 3 which is originally a secondary beam is firstly installed, a stable reference is provided for the installation and positioning of the roof inclined radial main rod 4 which is taken as a main beam, and the installation precision is better ensured.
The embodiments of this embodiment are all preferred embodiments of the present application, and are not intended to limit the scope of the present application, in which like parts are denoted by like reference numerals. Therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.
Claims (8)
1. The high-low span portal steel frame building structure comprises a vertical wall (1) and a plurality of tree-shaped supporting columns (2), and is characterized by further comprising a ridge ring beam (3), a plurality of roof inclined radial main rods (4) and a plurality of roof radial main rods (5), wherein the roof inclined radial main rods (4) and the roof radial main rods (5) are respectively distributed on two sides of the ridge ring beam (3), and the upper ends of the roof inclined radial main rods (4) and one ends of the roof radial main rods (5) are connected to the ridge ring beam (3); the tree-shaped support column (2) is positioned below the ridge ring beam (3) and the roof inclined radial main rod (4), and the upper end of the tree-shaped support column (2) is connected with the ridge ring beam (3) and/or the roof inclined radial main rod (4); the lower end of the roof inclined radial main rod (4) is connected to the vertical wall (1); a horizontal support rod (6) is also connected between two adjacent roof inclined radial main rods (4);
the lower ends of the tree-shaped support columns (2) are respectively fixedly connected to floors with different elevations on the high-rise concrete ground (7) through sliding hinge supports or elastic hinge supports or fixed hinge supports; the upper end of the tree-shaped support column (2) is connected with the corresponding ridge ring beam (3) or the corresponding roof inclined radial main rod (4) by adopting a pin shaft node;
the high-low span portal steel frame building structure also needs to use a plurality of temporary geotechnical steel pipe support columns (15) when being built, wherein the temporary geotechnical steel pipe support columns (15) are standard components and are divided into standard lengths of 6m, 5m, 4m, 3m, 2m, 1m and 0.5 m; the lower end of the temporary geotechnical steel pipe support column (15) is butted with a corresponding steel embedded part (8) by adopting a hexagonal bolt flange plate node;
the upper ends of two adjacent temporary geotechnical steel pipe support columns (15) are connected by adopting a connecting steel beam (10) in a pulling way, or the upper end of each temporary geotechnical steel pipe support column (15) is provided with a wind cable (11) in a pulling way;
the top of interim geotechnical steel pipe support column (15) sets up negative differential plate (12) and limit baffle (13), roof-ridge ring roof beam (3) install in on negative differential plate (12) and the lateral part of roof-ridge ring roof beam (3) is spacing through installation limit baffle (13).
2. The high-low span portal steel frame building structure according to claim 1, wherein the vertical wall (1) and the tree-shaped support column (2) are both made of steel structures; a tree-shaped support column (2) is also arranged below the radial roof main rod (5), and the radial roof main rod (5) is connected with the upper end of the corresponding tree-shaped support column (2); a horizontal support rod (6) is also connected between two adjacent roof radial main rods (5).
3. The high-low span portal steel frame building structure according to claim 1 or 2, characterized in that the vertical wall (1) comprises a plurality of vertically arranged portal steel columns (1 a); all the door steel columns (1 a) are arranged at intervals, the upper ends of two adjacent door steel columns (1 a) are fixedly connected through a connecting steel rod (1 b), and the lower ends of the door steel columns (1 a) are fixedly connected to a concrete ground (7) through a fixed hinge support or an elastic hinge support.
4. A high and low span portal steel frame construction structure as claimed in claim 3, wherein the horizontal strut (6) is a round steel tube or a square steel tube; the horizontal support rods (6) are fixedly connected with the roof inclined radial main rod (4) and the horizontal support rods (6) are fixedly connected with the roof radial main rod (5) by welding;
the door steel column (1 a) and the ridge ring beam (3) adopt square steel pipes, and the tree-shaped support column (2) adopts round steel pipes.
5. A construction process for constructing the high-low span portal frame construction structure as claimed in any one of claims 1 to 4, comprising the steps of:
s1, setting a vertical wall (1) and a plurality of temporary geotechnical steel pipe support columns (15);
s2, mounting the ridge ring beam (3) on the temporary geotechnical steel pipe support column (15) in a segmented mode;
s3, each section of ridge ring beam (3) is installed, a roof radial main rod (5) and a roof inclined radial main rod (4) are respectively installed on two sides of the ridge ring beam, one end of the roof radial main rod (5) is fixedly connected to a butt joint bracket (3 a) on one side of the ridge ring beam (3), one end of the roof inclined radial main rod (4) is fixedly connected to a butt joint bracket (3 a) on the other side of the ridge ring beam (3), and the other end of the roof inclined radial main rod (4) is fixedly connected to the upper end of a vertical wall (1);
s4, horizontal support rods (6) are arranged between every two adjacent roof inclined radial main rods (4) and between every two adjacent roof radial main rods (5);
s5, installing a plurality of tree-shaped support columns (2) below the ridge ring beams (3) and the roof inclined radial main rods (4), wherein the upper ends of the tree-shaped support columns (2) are connected to the corresponding ridge ring beams (3) and the corresponding roof inclined radial main rods (4) through pin shaft nodes;
s6, unloading the temporary geotechnical steel pipe support column (15).
6. The construction process of the high-low span portal steel frame building structure according to claim 5, wherein before the step S1, a concrete floor (7) and a concrete landing floor matched with the high-low span portal steel frame building structure are required to be poured, and a plurality of steel embedded pieces (8) are pre-buried when the concrete floor (7) and the concrete landing floor are subjected to pouring construction;
before the vertical wall (1) is installed, a hinged support (9) for fixedly connecting the vertical wall (1) is installed on the corresponding steel embedded part (8); before the tree-shaped support column (2) is installed, a hinged support (9) for fixedly connecting the tree-shaped support column (2) is installed on the corresponding steel embedded part (8).
7. The construction process of the high-low span portal steel frame construction structure according to claim 5 or 6, wherein in the step S4, the horizontal support bar (6) and the roof inclined radial main bar (4) and the horizontal support bar (6) and the roof radial main bar (5) are fixedly connected by welding; the welding is full penetration split welding.
8. The construction process of the high-low span portal steel frame building structure according to claim 5 or 6, wherein the hinge support (9) for fixedly connecting the vertical wall (1) is a fixed hinge support or an elastic hinge support; the hinged support (9) used for fixedly connecting the tree-shaped support column (2) is an elastic hinged support or a sliding hinged support; the elastic hinge support and the sliding hinge support are temporarily locked in the installation stage and then are opened after the whole steel frame building structure is integrally formed.
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Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU2002301430B2 (en) * | 2002-01-11 | 2005-06-02 | Perumahan Satelit Jaya Sdn Bhd | A building construction |
| CN202031246U (en) * | 2011-02-25 | 2011-11-09 | 积水住宅株式会社 | Roof truss framework of steel structure construction |
| CN103216103A (en) * | 2013-03-14 | 2013-07-24 | 江苏扬州建工建设集团有限公司 | Pre-deformation construction method for mounting oblique-arc-shaped combined steel-structured column of annular roof |
| CN104947793A (en) * | 2015-06-29 | 2015-09-30 | 东南大学 | Truss-string structure with additional standby cables |
| CN105421771A (en) * | 2015-09-30 | 2016-03-23 | 浙江精工钢结构集团有限公司 | Accumulated slip construction method for unequal-elevation string truss with columns |
| CN105569358A (en) * | 2015-12-15 | 2016-05-11 | 中国建筑第八工程局有限公司 | Construction method of special-shaped curved surface roof with large span and multiple curvatures |
| CN205712485U (en) * | 2016-06-07 | 2016-11-23 | 中冶东方工程技术有限公司秦皇岛研究设计院 | A kind of support system for a grid structure |
| CN106991248A (en) * | 2017-04-18 | 2017-07-28 | 清华大学建筑设计研究院有限公司 | A kind of wide span house cap coordinates the design method of stress with supporting structure |
| CN108005287A (en) * | 2017-12-28 | 2018-05-08 | 北京城建亚泰建设集团有限公司 | Steel construction roof structure modelled after an antique |
| CN208088624U (en) * | 2017-12-22 | 2018-11-13 | 贵州大学 | The double slope grid shell roof structures of assembled large-span concrete |
| CN109441101A (en) * | 2018-12-24 | 2019-03-08 | 河南郑大建筑材料有限公司 | A kind of operation platform on high altitude operation concrete circular roof |
| CN209413130U (en) * | 2018-12-10 | 2019-09-20 | 中建二局安装工程有限公司 | A kind of dendriform support rod structure |
| CN212248671U (en) * | 2020-04-30 | 2020-12-29 | 陕西建工集团股份有限公司 | Asymmetric curtain wall structure of greenhouse |
-
2022
- 2022-04-29 CN CN202210467535.4A patent/CN114837483B/en active Active
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU2002301430B2 (en) * | 2002-01-11 | 2005-06-02 | Perumahan Satelit Jaya Sdn Bhd | A building construction |
| CN202031246U (en) * | 2011-02-25 | 2011-11-09 | 积水住宅株式会社 | Roof truss framework of steel structure construction |
| CN103216103A (en) * | 2013-03-14 | 2013-07-24 | 江苏扬州建工建设集团有限公司 | Pre-deformation construction method for mounting oblique-arc-shaped combined steel-structured column of annular roof |
| CN104947793A (en) * | 2015-06-29 | 2015-09-30 | 东南大学 | Truss-string structure with additional standby cables |
| CN105421771A (en) * | 2015-09-30 | 2016-03-23 | 浙江精工钢结构集团有限公司 | Accumulated slip construction method for unequal-elevation string truss with columns |
| CN105569358A (en) * | 2015-12-15 | 2016-05-11 | 中国建筑第八工程局有限公司 | Construction method of special-shaped curved surface roof with large span and multiple curvatures |
| CN205712485U (en) * | 2016-06-07 | 2016-11-23 | 中冶东方工程技术有限公司秦皇岛研究设计院 | A kind of support system for a grid structure |
| CN106991248A (en) * | 2017-04-18 | 2017-07-28 | 清华大学建筑设计研究院有限公司 | A kind of wide span house cap coordinates the design method of stress with supporting structure |
| CN208088624U (en) * | 2017-12-22 | 2018-11-13 | 贵州大学 | The double slope grid shell roof structures of assembled large-span concrete |
| CN108005287A (en) * | 2017-12-28 | 2018-05-08 | 北京城建亚泰建设集团有限公司 | Steel construction roof structure modelled after an antique |
| CN209413130U (en) * | 2018-12-10 | 2019-09-20 | 中建二局安装工程有限公司 | A kind of dendriform support rod structure |
| CN109441101A (en) * | 2018-12-24 | 2019-03-08 | 河南郑大建筑材料有限公司 | A kind of operation platform on high altitude operation concrete circular roof |
| CN212248671U (en) * | 2020-04-30 | 2020-12-29 | 陕西建工集团股份有限公司 | Asymmetric curtain wall structure of greenhouse |
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