CN113152681A - Roof formed by steel-film space combined structural units based on rigid support and film stretching method thereof - Google Patents

Roof formed by steel-film space combined structural units based on rigid support and film stretching method thereof Download PDF

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Publication number
CN113152681A
CN113152681A CN202110412924.2A CN202110412924A CN113152681A CN 113152681 A CN113152681 A CN 113152681A CN 202110412924 A CN202110412924 A CN 202110412924A CN 113152681 A CN113152681 A CN 113152681A
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China
Prior art keywords
membrane
unit
jacking
rigid
roof
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CN202110412924.2A
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Chinese (zh)
Inventor
李杰成
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Guangxi Institute Of Building Research & Design
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Guangxi Institute Of Building Research & Design
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Publication of CN113152681A publication Critical patent/CN113152681A/en
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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
    • E04B1/3404—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 supported by masts or tower-like structures
    • 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
    • E04B1/3416—Structures comprising mainly a central support column and a cantilevered roof
    • 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
    • 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
    • E04B1/35—Extraordinary methods of construction, e.g. lift-slab, jack-block
    • E04B1/3544—Extraordinary methods of construction, e.g. lift-slab, jack-block characterised by the use of a central column to lift and temporarily or permanently support structural elements
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B7/00—Roofs; Roof construction with regard to insulation
    • E04B7/12—Roofs; Roof construction with regard to insulation formed in bays, e.g. sawtooth roofs

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Tents Or Canopies (AREA)

Abstract

The application provides a roof formed by steel-membrane space combination structural units based on rigid support and a membrane tensioning method thereof. The roof comprises a spatial support grid of a cross-bar system, the spatial support grid is a rigid support system formed by connecting a series of rigid support units, the surface of each rigid support unit is covered with a membrane unit, and adjacent membrane units are connected, so that the whole integral roof with a complete steel-membrane spatial structure is formed; the rigid support system comprises a support unit and a jacking unit, the jacking unit comprises a jacking device and a loop jacking ring, and the loop jacking ring can tension or adjust the film tension of the film unit through the movement of the jacking device. The utility model provides a roof make full use of membrane structure's braced system increases roofing integral rigidity and coordinated deformation, makes roof large-span cantilever truss's deformation more even, has guaranteed the rounding off of the end eaves mouth line of encorbelmenting pleasing to the eye, requires to provide technical guarantee for building professional's molding.

Description

Roof formed by steel-film space combined structural units based on rigid support and film stretching method thereof
Technical Field
The application relates to a steel-film space combined structure system and a construction method thereof, in particular to a roof formed by steel-film space combined structure units based on rigid support and a film stretching method thereof.
Background
The membrane structure usually adopts a high-strength flexible membrane material and an auxiliary structure to generate a certain pre-tensile stress in the membrane structure in a certain mode, and forms a certain space shape under stress control to be used as a covering structure or a building main body.
In the membrane structure design of the space steel structure canopy, a membrane stretching system with a conical shape is generally a 'flying column' flexible cable stretching system for stretching a membrane by using a pulling cable. The system adopts the steel cable for tensioning, and the steel cable is flexible in the compression direction, so that the problem of the overall rigidity of the steel cantilever cannot be solved, and the system does not contribute to the overall rigidity of a roof. Therefore, measures for specially improving the overall rigidity of the roof, such as adding a connection truss and the like, are needed, so that not only are the cost and the construction process increased, but also the integrity between the unit membrane structures cannot be solved.
Disclosure of Invention
The application provides a roof formed by steel-membrane space combination structural units based on rigid support. The roof comprises space supporting grids of crossed rod systems, the roof is a rigid supporting system of the whole roof formed by connecting a series of rigid supporting units with each other, a whole membrane material covers the rigid supporting system of the whole roof, each supporting unit membrane material is fixed with the rigid rod systems on the periphery of the unit, and the membrane material of each supporting unit tensions the whole roof membrane through a loop jacking ring of a jacking device to form the whole integral steel-membrane space structure whole roof. The crossed inclined struts and the tensioned membrane units form a spatial steel-membrane integrated membrane cap unit rigid system together, and the overall rigidity of the whole roof steel canopy is improved.
The deformation of each spatial truss with different overhanging spans and different rigidity of the awning is a steel-membrane spatial combination structure formed by steel supports with oblique rigidity and membrane surfaces, the support system of the membrane structure is fully utilized to increase the integral rigidity and coordinate the deformation of the roof, so that the deformation of the large-span overhanging truss of the roof is more uniform, the smooth and beautiful appearance of the overhanging end opening line is ensured, and the technical guarantee is provided for the modeling requirement of the building major.
According to a first aspect of the application, a rigid support-based steel-membrane space combination structural unit constructed roof is provided, the roof comprises a space support grid of a crossed rod system, the space support grid is a rigid support system formed by connecting a series of rigid support units, the surface of each rigid support unit is covered with a membrane unit, and adjacent membrane units are connected, so that the whole integral steel-membrane space structure integral roof is formed;
the rigid support system comprises a support unit and a jacking unit, the jacking unit comprises a jacking device and a loop jacking ring, and the loop jacking ring is tensioned or adjusted through the movement of the jacking device.
In some embodiments of the present application, the supporting unit includes:
the horizontal rigid support rod system is arranged at the bottom of the support unit;
and the oblique rigid cross rod system is arranged on the horizontal rigid support system and is connected with the horizontal rigid support rod system.
Optionally, the diagonal rigid cross-bar system is welded to the horizontal rigid support bar system.
In some embodiments of the present application, the oblique rigid support rod system cross node is provided with a vertical rigid rod, the vertical rigid rod is provided with the loop jacking ring, and the jacking device is arranged above the loop jacking ring.
In some embodiments of the present application, the center of the membrane material of the membrane unit is fixed to a top plate on the loop jacking ring.
In some embodiments of the present application, a vertical rigid rod in the middle of the looper jack ring connects the top support deck.
In some embodiments of the present application, the top support cover plate is connected with the loop jacking ring through a plurality of evenly arranged screws and the distance is adjusted, and the middle part of the membrane unit is fixed on the top plate of the loop jacking ring.
In some embodiments of the present application, the membrane units are fixed around the circumference to the horizontal rigid support bar system.
In some embodiments of the present application, the horizontal rigid support bar system comprises a set of horizontal rigid bars connected end to form a set of horizontal rigid nodes.
In some embodiments of the present application, the diagonal rigid support rod system includes a set of diagonal rigid support rods, one end of each set of diagonal rigid support rods is connected to the horizontal rigid node of the set of horizontal rigid rods, and the other end is connected to the vertical diagonal cross to form a cross node.
In some embodiments of the present application, the number of the set of horizontal rigid rods is the same as the number of the set of diagonal rigid support rods.
In some embodiments of the present application, the membrane units are secured at their central portions to the cross-over nodes and at their peripheral edges to the horizontal rigid support bar system.
In some embodiments of the present application, the loop jacking ring is disposed on the vertical rigid bar adjacent to one end of the crossover node, and is movable up and down the vertical rigid bar.
In some embodiments of the present application, the top support cover plate is disposed on an outer surface of the vertical rigid rod and is fixedly connected to an end of the vertical rigid rod away from the intersection node.
In some embodiments of the present application, one end of the jacking device is fixed on the loop jacking ring, and the other end of the jacking device is connected with the top supporting cover plate and the connection position is adjustable.
In some embodiments of the present application, the middle portion of the membrane unit is fixed to an upper surface of the loop lift ring.
In some embodiments of the present application, the jacking device comprises a set of adjustable screws.
In some embodiments of the present application, the set of adjustable screws are evenly spaced around the vertical rigid rod.
In some embodiments of the present application, the top of the membrane unit is staggered in height or height after tensioning.
According to a second method of the present application, there is provided a film stretching method for a roof as described above, comprising:
adjusting the jacking device to drive the loop jacking ring to move upwards so as to tension the membrane unit;
all membrane units are tensioned simultaneously or in steps.
In some embodiments of the present application, adjusting the jacking device to move the looper jacking ring upward to tension the film unit comprises:
adjusting the connecting position of the screw rod on the top supporting cover plate to drive the loop jacking ring to move upwards so as to tension the membrane unit.
Compared with the traditional 'flying column' form, the steel-film space combined structure provided by the application reduces a horizontal support system (a secondary structure crossed rigid support system of a film structure is fully utilized), and enhances the overall rigidity and stability of the steel canopy, so that the overall deformation synergistic performance of the steel canopy truss is better, and the structural steel consumption is reduced. The workman carries out tensioning membrane cloth operation on membrane upper portion, reduces and sets up the scaffold frame, and millions of scaffold frame expenses have been practiced thrift in every project, not only reduces the construction degree of difficulty but also reduce cost.
The 'conical' shape of the membrane structure adopts steel members to form rigid support in a crossed mode, so that each awning forms an integral space supporting net of a crossed rod system, the horizontal and vertical integrity and stability of the main body pipe truss awning are greatly enhanced by using an auxiliary structure (secondary structure) of the membrane structure, and better space rigidity is obtained. A loop jacking ring is arranged at each intersection of the rigid supports to jack the tensioning film, so that the film is tensioned and formed into cone shapes with different slopes, the requirements of necessary shaping tension and design shapes are met, the integral rigidity and stability of the steel canopy are enhanced, the deformation integral synergistic performance of main trusses of the steel canopy after temporary support is removed is better, and the smoothness and attractiveness of the platform opening line are guaranteed. Compared with a roof awning without the technical system, the final building effect is very good, the deformation coordination among the main trusses with different overhanging spans of each truss is good, the overhanging end eave line is smoother and more attractive, and the cost of structural measures for enhancing the integral rigidity of the roof is reduced.
Additional aspects and advantages of the present application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the present application.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is apparent that the drawings in the following description are only some embodiments of the present application.
Fig. 1 shows a schematic view of a steel-film spatial composite structural unit according to an exemplary embodiment of the present application.
Fig. 2 shows a top view of a steel-membrane spatial composite structural unit after membrane tensioning according to an exemplary embodiment of the present application.
Fig. 3 illustrates a perspective view of a steel-film spatial composite structural unit according to an exemplary embodiment of the present application.
Fig. 4 shows a schematic diagram of a jacking unit according to an example embodiment of the present application.
Fig. 5 illustrates a perspective view of a jacking unit according to an example embodiment of the present application.
Fig. 6 shows a schematic view of a jacking unit according to another embodiment of the present application.
Fig. 7 shows a schematic view of a membrane unit pre-tensioning movable jacking unit according to an example embodiment of the present application.
Fig. 8 shows a schematic view of a movable jacking unit after tensioning of a membrane unit according to an exemplary embodiment of the present application.
Fig. 9 shows a perspective view of the movable jacking unit after tensioning of the membrane unit according to an exemplary embodiment of the present application.
FIG. 10 shows a schematic diagram of a post-tensioning steel-membrane spatial composite structural unit of a membrane unit according to an example embodiment of the present application
Fig. 11 illustrates a perspective view of a steel-membrane spatial composite structural unit after a membrane unit is tensioned according to an exemplary embodiment of the present application.
Fig. 12 shows a steel-membrane spatial composite structural architecture diagram one according to an example embodiment of the present application.
Fig. 13 shows a steel-membrane spatial composite structural architecture diagram two in accordance with an example embodiment of the present application.
Fig. 14 shows a first schematic view of a steel-membrane spatial combination structural roof according to an exemplary embodiment of the present application.
Fig. 15 shows a schematic view of a steel-membrane space combination structural roof according to an exemplary embodiment of the present application.
FIG. 16 shows an enlarged schematic view of an integral joint between membrane elements according to an example embodiment of the present application.
Fig. 17 shows a flow chart of a film spreading method of a roof according to an exemplary embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below, and it should be apparent that the described embodiments are some, but not all, embodiments of the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The terms "first", "second", etc. in this application are used to distinguish between different objects and not to describe a particular order. Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.
The application provides a steel-membrane space combined structure unit, which adopts a conical rigid support structure to improve the integral rigidity of a membrane structure and better coordinate integral deformation; simultaneously set up activity jacking structure on rigid support structure for the workman can be in the membrane material top through the mode of adjusting activity jacking structure progressively tensioning membrane material, with the rate of tension that reaches the design requirement, need not set up tall and big scaffold frame, practices thrift the cost.
The technical solution of the present application will be described in detail below with reference to the accompanying drawings.
Fig. 1 shows a schematic diagram of a steel-film spatial combination bonded structural unit according to an exemplary embodiment of the present application.
Fig. 2 shows a top view of a steel-membrane spatial composite structural unit after membrane tensioning according to an exemplary embodiment of the present application.
Fig. 3 illustrates a perspective view of a steel-film spatial composite structural unit according to an exemplary embodiment of the present application. The steel-film space combination structural unit provided by the present application will be described with reference to fig. 1 to 3.
As shown in fig. 1, a steel-membrane space combination structural unit 1000 according to an embodiment of the present application includes a membrane unit 110 and a membrane cap unit. Wherein the membrane cap unit includes a support unit 120. The support unit 120 is disposed under the membrane unit 110 to provide rigid support to the membrane unit. The membrane unit 110 may be a tetrafluoro membrane (i.e., a PTFE membrane). The membrane unit and the supporting unit jointly form a membrane cap unit. Referring to fig. 1, the support unit 120 is formed of crossed diagonal braces including a horizontal rigid support bar system 121 and an oblique rigid cross bar system 122. The horizontal rigid support bar system 121 is disposed at the bottom of the rigid support unit 120. The diagonal rigid cross bar system 122 is disposed above the horizontal rigid support bar system 121, and is connected to the horizontal rigid support bar system 121.
The horizontal rigid support rod system 121 includes a set of horizontal rigid rods 1210 connected end to form a set of horizontal rigid nodes 1211.
The diagonal rigid cross-bar system 122 includes a set of diagonal rigid support bars 1220. One end of the set of diagonal rigid support rods 1220 is connected to the horizontal rigid nodes 1211 of the set of horizontal rigid rods, and the other end is connected in a vertical diagonal cross manner to form a cross node 1221. The middle of the membrane unit 110 is fixed to the cross node 1221, and the periphery of the membrane unit is fixed to the horizontal rigid support bar system
The set of horizontal rigid rods 1210 and the set of diagonal rigid support rods 1220 may be steel pipes, but are not limited thereto. Referring to fig. 1, according to an exemplary embodiment of the present application, the number of the set of horizontal rigid rods 1210 and the number of the set of diagonal rigid support rods 1220 may be the same, for example, four steel pipes. According to other embodiments of the present application, the number of the set of horizontal rigid rods 1210 may be different from the number of the set of diagonal rigid support rods 1220. The number of the horizontal rigid rods 1210 and the oblique rigid support rods 1220 can be more than 3, and the adjustment is specifically carried out according to modeling and rigidity requirements.
The diagonal rigid supports are formed by the diagonal intersection of the set of diagonal rigid support bars 1220, so that each steel-membrane space combination structural unit 1000 forms an integral space support grid. This structure has wholeness and stability in level and vertical for membrane structure obtains better space rigidity.
Fig. 4 shows a schematic diagram of a jacking unit according to an example embodiment of the present application.
Fig. 5 illustrates a perspective view of a jacking unit according to an example embodiment of the present application.
Fig. 6 shows a schematic view of a jacking unit according to another embodiment of the present application.
As shown in fig. 4 to 6, in order to simplify the construction process and reduce the construction cost, the membrane cap unit of the steel-membrane space combination structural unit 1000 provided by the present application further includes a jacking unit 130 disposed on the cross node 1221.
Referring to fig. 4 and 6, the jacking unit 130 comprises a vertical rigid rod 131, a loopjacking ring 132, a top support cover plate 133 and a jacking device 134. One end of the vertical rigid rod 131 is fixed to the cross node 1221. The loop jacking ring 132 tensions or adjusts the film tension of the film unit by the movement of the jacking device 134. A looplift ring 132 is provided on the outer surface of the vertical rigid rod 131 at one end adjacent to the cross node 1221, and is movable along the vertical rigid rod. A top support cover plate 133 is disposed on the outer surface of the vertical rigid rod 131 and is fixedly attached to the other end of the vertical rigid rod 131 remote from the cross node 1221. One end of the jacking device 134 is fixed on the loop jacking ring 132, and the other end is connected with the top supporting cover plate 133, and the connection position is adjustable.
Referring to fig. 1, in the steel-membrane space combination structural unit shown in fig. 1, a loop jacking ring 132 capable of lifting is arranged at the center 1221 of the intersection point of the inclined strut of the membrane cap unit. A vertical rigid rod 131 in the middle of the loop jacking ring 132 is connected with a top support cover plate 133. The top supporting cover plate 133 and the loop jacking ring 132 are connected through a plurality of screws 1340 uniformly arranged and the distance between the top supporting cover plate and the loop jacking ring 132 is adjusted, and the middle part of the membrane unit 110 is fixed on the top plate of the loop jacking ring 132. The membrane unit 110 is fixed around the perimeter to the perimeter truss members.
As shown in fig. 4 and 6, according to the exemplary embodiment of the present application, the vertical rigid rod 131 is a circular steel pipe, but is not limited thereto. The shape of the loop jacking ring 132 may be a circular ring shape, and the loop jacking ring is sleeved on the surface of the vertical rigid rod 131 and moves along the vertical rigid rod 131. The top supporting cover plate 133 is fixed at the end of the vertical rigid rod 131, may be circular, or may be in the shape of a cap with a circular brim, and is wrapped at the end of the top supporting cover plate 133. The fixed connection of the top support cover plate 133 at the end of the vertical rigid rod 131 may be, but is not limited to, welding.
According to an example embodiment of the present application, the jacking device 134 may be a set of adjustable screws 1340. The adjustable screw 1340 includes a screw 1341 and a nut 1342. For example, screw 1341 can be a high-strength screw.
According to an exemplary embodiment of the present application, the set of adjustable screws 1340 is more than 3 in number and is adjustable. The number of the required adjustable screws 1340 can be adjusted correspondingly for the steel-film space combination structural units with different dimensions. The more the number of the screws, the more the films are stressed, but the film stretching speed and the construction efficiency are reduced along with the increase of the number of the screws, and the practical items determine the reasonable number according to the size.
According to the exemplary embodiment of the present application, the set of adjustable screws 1340 are evenly spaced around the vertical rigid rod 131, so that the adjustable screws 1340 are evenly stressed, ensuring structural stability.
In the jacking unit structure shown in fig. 4, the vertical rigid rod 131 is fixed, and the loop jacking ring 132 can move up and down. In the jacking unit structure shown in fig. 6, the loop jacking ring 132 is fixed, the vertical rigid rod 131 can move up and down, and the screw 1342 is connected with the loop jacking ring 132 through the clamping groove 135.
Fig. 7 shows a schematic view of a membrane unit pre-tensioning movable jacking unit according to an example embodiment of the present application.
As shown in fig. 7, the middle portion of the membrane unit 110 is fixed to the top support cover 133. Before tensioning, the looplift ring 132 is located closest to the cross-node 1221. The screw 1341 has one end fixed to the loop jacking ring 132 and the other end connected to the top support cover plate 133. The loop jacking ring 132 is furthest from the top support cover plate 133. The film unit 110 is in a relaxed state.
Fig. 8 shows a schematic view of a movable jacking unit after tensioning of a membrane unit according to an exemplary embodiment of the present application.
Fig. 9 shows a perspective view of the movable jacking unit after tensioning of the membrane unit according to an exemplary embodiment of the present application.
Fig. 10 shows a schematic diagram of a steel-membrane spatial composite structural unit after membrane unit tensioning according to an example embodiment of the present application.
Fig. 11 illustrates a perspective view of a steel-membrane spatial composite structural unit after a membrane unit is tensioned according to an exemplary embodiment of the present application.
As shown in fig. 8-11, the movable connection ends of the threaded rods 1342 and the top support cover plate 133 are adjusted when tensioned. The connection position of the screw 1342 and the top support cover 133 is adjusted by tightening the nut 1341.
The screw 1342 drives the loop jacking ring 132 to move along the vertical rigid rod 131 towards the top support cover plate 133. The distance between the top support cover plate 133 and the loop jacking ring 132 is shortened, and the loop jacking ring 132 jacks upwards. The membrane unit 110 is gradually tensioned until the tightness required by the design is met.
After the membrane unit is tensioned, the nut 1341 is locked. The distance that the loop lifting ring 132 is lifted up may be determined according to the design tension of the membrane unit 110 and the modeling requirement of the steel-membrane space combination structural unit 100.
The steel-membrane space combination structural unit according to the present embodiment may be used for a roofing structure, but the present application is not limited thereto. Such as curtain walls, etc.
Fig. 12 and 13 show two steel-film spatial composite structural architectures according to example embodiments of the present application.
In the embodiment shown in fig. 12, each membrane cap unit includes a set of horizontal rigid rods 1210, two sets of diagonal rigid support rods 1220, and a jacking unit 130.
In the embodiment shown in fig. 13, each membrane cap unit includes two sets of horizontal rigid rods 1210, two sets of diagonal rigid support rods 1220, and a jacking unit 130.
There is also provided, in accordance with an example embodiment of the present application, a spatial membrane structure system comprising a spatial array of steel-membrane spatial composite structural elements 1000. According to different design requirements, a series of steel-film space combination structure units 1000 can be spatially arrayed in different modes, and space structures with different shapes can be obtained.
Fig. 14 shows a first schematic view of a steel-membrane spatial combination structural roof according to an exemplary embodiment of the present application.
Fig. 15 shows a schematic view of a steel-membrane space combination structural roof according to an exemplary embodiment of the present application.
As shown in fig. 14 and 15, according to an exemplary embodiment of the present application, there is also provided a steel-film spatial composite structure roof including the above-described steel-film spatial composite structure system.
The roof comprises a spatial support grid of a cross-bar system, which is a rigid support system formed by a series of rigid support units interconnected. The surface of each rigid supporting unit is covered with a membrane unit, and the adjacent membrane units are connected, so that the whole integral roof with the steel-membrane space structure is formed. The rigid support system comprises the support unit and the jacking unit.
As shown in fig. 12-15, after tensioning, the tops of all the membrane units are staggered in height or elevation.
The steel-film space combined structure system can be combined together in a welding mode, the size of a single steel-film space combined structure system can be set to be about 2-10 meters, and the shape of the single steel-film space combined structure system can be square, triangular, hexagonal or even octagonal.
FIG. 16 shows an enlarged schematic view of an integral joint between membrane elements according to an example embodiment of the present application.
As shown in fig. 16, a membrane material connecting passage 140 is provided between the unit a and the unit B, and a waterproof membrane 141 is provided above the membrane material connecting passage to prevent rainwater and the like from entering the connecting passage 140. Bolts 143 are respectively arranged on the film pressing steel plates 142 on two sides of the unit A and the unit B, and the stiffening plate 144 below the bolts 143 is welded with the upper chord 145 of the copper truss and the film pressing steel plates 142. Wherein bolts 143 secure squeeze film steel plate 142 and squeeze film aluminum plate 146 together. A washer 147 is arranged below the laminated aluminum plate 146 to better ensure the fastening effect.
Alternatively, the welding part of each film unit 10 is located at the edge of the start point of the film undulation, and the specific position is determined according to the actual installation situation.
According to an exemplary embodiment of the application, there is also provided a steel-film space composite structure curtain wall, including the above steel-film space composite structure system.
The rigid supporting unit and the tensioned membrane unit jointly form a steel-membrane integrated space, so that the integral rigidity of the whole roof can be improved, and the structural integrity of the whole roof is better; the rigid support structures are connected with each other to form an integral horizontal support net of the crossed rod system, so that the horizontal integrity and the vertical integrity of the main roof truss are enhanced, and better space rigidity is obtained.
Meanwhile, in the construction process of the membrane structure roof, temporary support in the construction process can be omitted, and the deformation overall cooperativity is better. For the space trusses with different spans and different rigidity, the deformation of the space trusses is coordinated by the steel-film space combined structural unit, so that the integral rigidity of the roof is increased, the deformation is more coordinated, and the deformation of the large-span roof truss is more uniform. Thereby ensuring the smooth and beautiful appearance of the roof and providing technical support for the modeling requirement of building major.
In addition, compared with the traditional 'flying column' form, the membrane structure roof reduces a horizontal support system, fully utilizes the rigid support unit of the steel-membrane space combination structural unit, improves the overall rigidity, stability and overall deformation cooperativity, and reduces the steel amount of the structure.
Meanwhile, in the construction process, an operator can perform tensioning operation on the upper part of the membrane unit, so that the erection of a high scaffold is reduced, the scaffold cost is saved, and the construction cost is reduced.
The application also provides a film spreading method of the roof, which comprises the following steps:
adjusting the jacking device to drive the loop jacking ring to move upwards so as to tension the membrane unit;
all membrane units are tensioned simultaneously or in steps.
Wherein, after tensioning, the tops of all the membrane units are staggered in height or height.
Specifically, adjusting the jacking device to drive the loop jacking ring to move upwards so as to tension the film unit comprises:
adjusting the connecting position of the screw rod on the top supporting cover plate to drive the loop jacking ring to move upwards so as to tension the membrane unit.
FIG. 17 shows a flow chart of a method for membrane tensioning of a roof according to an example embodiment of the present application. The method comprises the following steps:
s10: fixing the middle part of the membrane unit on a loop jacking ring;
s20: fixing the periphery of the membrane unit on a horizontal rigid support rod system;
s30: adjusting the connecting position of the jacking device on the top supporting cover plate of the jacking unit;
s40: the jacking device drives the loop jacking ring to move upwards;
s50: lifting the loop lifting ring upwards and tensioning the membrane unit;
s60: and tensioning the membrane units of each steel-membrane space combination structural unit one by one.
Alternatively, step S60 may be to tension all membrane units simultaneously, as the case may be, depending on the installation.
It should be understood that the above examples are only for clearly illustrating the present application and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications of this invention may be made without departing from the spirit or scope of the invention.

Claims (20)

1. A roof formed by steel-film space combination structure units based on rigid support is characterized in that the roof comprises space support grids of a crossed rod system, the space support grids are rigid support systems formed by connecting a series of rigid support units, the surface of each rigid support unit is covered with a film unit, and adjacent film units are connected with each other, so that the whole integral steel-film space structure integral roof is formed;
the rigid support system comprises a support unit and a jacking unit, the jacking unit comprises a jacking device and a loop jacking ring, and the loop jacking ring is tensioned or adjusted through the movement of the jacking device.
2. A roof according to claim 1, characterised in that said support unit comprises:
the horizontal rigid support rod system is arranged at the bottom of the support unit;
and the oblique rigid cross rod system is arranged on the horizontal rigid support system and is connected with the horizontal rigid support rod system.
3. A roof as claimed in claim 2, wherein said crossing node of said diagonal rigid support rod system is provided with a vertical rigid rod, said vertical rigid rod is provided with said loop jacking ring, and said jacking device is provided above said loop jacking ring.
4. A roof according to claim 2, characterised in that the centre of said membrane material of said membrane unit is secured to a top plate on said loop jacking ring.
5. A structural unit according to claim 3 wherein a vertical rigid bar intermediate the looper jacking rings connects the top support deck.
6. The roof of claim 5, wherein the top supporting cover plate is connected with the loop jacking ring through a plurality of evenly arranged screws and the distance between the top supporting cover plate and the loop jacking ring is adjusted, and the middle part of the membrane unit is fixed on the top plate of the loop jacking ring.
7. A roof according to claim 2, wherein said membrane units are peripherally secured to said horizontal rigid support braces.
8. A roof as claimed in claim 2, wherein said horizontal rigid support beam system comprises a plurality of horizontal rigid beams connected end to form a plurality of horizontal rigid nodes.
9. A roof according to claim 8, wherein said system of diagonal rigid support rods comprises a plurality of diagonal rigid support rods, one end of each of said plurality of diagonal rigid support rods being connected to a horizontal rigid node of said plurality of horizontal rigid rods, and the other end being connected vertically and diagonally in a cross-joint manner to form a cross-joint.
10. A roof as claimed in claim 9, wherein said set of horizontal rigid struts is equal in number to said set of diagonal rigid struts.
11. A roof according to claim 9, wherein a central portion of said membrane elements is secured to said cross-over nodes and a peripheral portion of said membrane elements is secured to said horizontal rigid support braces.
12. Roof according to claim 3,
the loop jacking ring is arranged on the vertical rigid rod, is adjacent to one end of the cross node, and can move up and down along the vertical rigid rod.
13. A roof according to claim 5, wherein said top support decking is provided on an outer surface of said vertical rigid rods and is fixedly connected to an end of said vertical rigid rods remote from said crossing nodes.
14. A roof according to claim 13, wherein said jacking means is secured at one end to said looper jacking ring and at the other end to said top support decking and is adjustably connected.
15. A roof according to claim 14, characterised in that a middle portion of said membrane unit is secured to an upper surface of said loop jacking ring.
16. A roof according to claim 14, characterised in that the jacking means comprises a set of adjustable screws.
17. A roof according to claim 16, wherein said set of adjustable threaded rods are evenly spaced around said vertical rigid rod.
18. A roof according to claim 16, wherein the tops of said membrane units are staggered in height or elevation after tensioning.
19. A method of membrane tensioning of a roof as claimed in any one of claims 1 to 18, including:
adjusting the jacking device to drive the loop jacking ring to move upwards so as to tension the membrane unit;
all membrane units are tensioned simultaneously or in steps.
20. The method of claim 19, wherein adjusting the jacking device to move the looper jacking ring upward to tension the film unit comprises:
adjusting the connecting position of the screw rod on the top supporting cover plate to drive the loop jacking ring to move upwards so as to tension the membrane unit.
CN202110412924.2A 2020-04-17 2021-04-16 Roof formed by steel-film space combined structural units based on rigid support and film stretching method thereof Pending CN113152681A (en)

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