CN110670942A - Construction method of space curved surface special-shaped steel skeleton supporting type single-layer ETFE (ethylene-vinyl acetate) film structure - Google Patents
Construction method of space curved surface special-shaped steel skeleton supporting type single-layer ETFE (ethylene-vinyl acetate) film structure Download PDFInfo
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- CN110670942A CN110670942A CN201910975588.5A CN201910975588A CN110670942A CN 110670942 A CN110670942 A CN 110670942A CN 201910975588 A CN201910975588 A CN 201910975588A CN 110670942 A CN110670942 A CN 110670942A
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H15/00—Tents or canopies, in general
- E04H15/32—Parts, components, construction details, accessories, interior equipment, specially adapted for tents, e.g. guy-line equipment, skirts, thresholds
- E04H15/34—Supporting means, e.g. frames
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H15/00—Tents or canopies, in general
- E04H15/32—Parts, components, construction details, accessories, interior equipment, specially adapted for tents, e.g. guy-line equipment, skirts, thresholds
- E04H15/64—Tent or canopy cover fastenings
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Abstract
The invention discloses a construction method of a space curved surface special-shaped steel framework supporting type single-layer ETFE membrane structure, which belongs to the technical field of ETFE membrane structure construction and comprises the following steps: constructing a main supporting steel pipe to form a special-shaped steel skeleton according to design requirements, and then constructing a secondary supporting steel pipe to form a secondary unit grid; and B: measuring the sizes of the main unit cells and the sub unit cells, inputting the size data into design software to generate the size of a single ETFE membrane, cutting out the final construction ETFE membrane and adding membrane side ropes on the periphery of the ETFE membrane; and C: clamping the periphery of a single ETFE membrane by using a batten to pre-fix the ETFE membrane on a main support steel pipe around a main unit cell, then tensioning the ETFE membrane for construction by using a tightener, and fixing the ETFE membrane on the main support steel pipe corresponding to the main unit cell; step D: and finally, the middle part of the ETFE membrane is correspondingly fixed on the secondary support steel pipe through the matching of the self-tapping screw and the clamping strip, so that the special-shaped ETFE membrane curved surface effect with attractive appearance and long service life is formed.
Description
Technical Field
The invention belongs to the technical field of ETFE membrane structure construction, and particularly relates to a construction method of a space curved surface special-shaped steel framework support type single-layer ETFE membrane structure.
Background
The ETFE membrane can produce membrane structure effects with different lattices and different forms by matching with support frameworks with different forms and shapes with good cuttability, tensibility, flexibility and tear resistance. With the wide application of the ETFE membrane, the modeling and presentation effects of the ETFE membrane structure are more and more complex, and the traditional membrane size measuring and cutting method cannot meet the installation precision requirement of the curved surface structure. The ETFE membrane presents a complex space special-shaped curved surface effect, the requirement on the size precision of the installed membrane is high, and the cutting difficulty is high; the method and the method for presenting the curved surface effect need to be researched.
Disclosure of Invention
The invention aims to provide a construction method of a space curved surface special-shaped steel skeleton supporting type single-layer ETFE membrane structure; the technical scheme adopted for achieving the purpose is as follows:
a construction method of a spatial curved surface special-shaped steel skeleton supporting type single-layer ETFE membrane structure comprises the following steps,
step A: building a main supporting steel pipe to form a special-shaped steel skeleton according to design requirements, and then building secondary supporting steel pipes in each main unit cell of the special-shaped steel skeleton to form a secondary unit cell;
and B: measuring the sizes of the main unit cells and the sub unit cells, inputting the size data into design software to generate the size of a single ETFE membrane, cutting out a final construction ETFE membrane according to the size of the single ETFE membrane, and adding membrane side ropes on the periphery of the ETFE membrane;
and C: clamping the periphery of a single ETFE membrane by using a clamping plate strip, pre-fixing the single ETFE membrane on a main support steel pipe around a main unit cell, then tensioning the construction ETFE membrane by using a tightener, and fixing the periphery of the construction ETFE membrane on the main support steel pipe corresponding to the main unit cell by matching a self-tapping screw and the clamping plate strip;
step D: and finally, the middle part of the ETFE membrane is correspondingly fixed on the secondary support steel pipe through the matching of the self-tapping screw and the clamping strip, so that the special-shaped ETFE membrane curved surface effect is formed.
Preferably, in step a, a plurality of secondary support steel pipes are built in each primary unit cell of the special-shaped steel framework to form a plurality of secondary unit cells.
Preferably, in step a, each main unit is divided into odd-shaped quadrangles of different shapes; each sub-unit cell is triangular.
Preferably, in step B, the measurement of the sizes of the main unit cell and the sub unit cell is performed after the construction of the deformed steel framework is completed and the deformation is stable.
Preferably, in step B, the size of the construction ETFE membrane corresponds to the main unit cell size and leaves a margin for the fixation in step D.
Preferably, in step C, the step of stretching the ETFE membrane for construction is as follows:
step C1: sequentially naming four sides of the ETFE diaphragm to be a first side, a second side, a third side and a fourth side in the circumferential sequence; firstly, tensioning a first side edge, wherein the tensioning direction is along the length direction of the first side edge, and the first side edge is fixed after tensioning is finished;
step C2: then simultaneously tensioning the second side edge and the third side edge, outwards tensioning the second side edge in a direction perpendicular to the length direction of the second side edge, and fixing after tensioning is finished; stretching the two ends of the third side outwards in an expanding shape;
step C3: stretching the two ends of the third side outwards in an expanding shape, stretching the fourth side outwards in a direction perpendicular to the length direction of the fourth side, and fixing after stretching is finished;
step C4: and (3) keeping the two ends of the third side edge in an expanding shape to be stretched outwards, stretching the third side edge simultaneously, wherein the stretching direction is perpendicular to the length direction of the third side edge and is outwards carried out, and fixing is carried out after the stretching is finished, so that the whole stretching of the ETFE diaphragm for construction is finished. )
The invention has the following beneficial effects: according to the invention, through the differentiation design of the main unit cells and the sub unit cells, the measurement size and the cutting size precision of the constructed ETFE membrane are improved, and the tensioning construction mode of the constructed ETFE membrane is improved, the problem that the size data of the ETFE membrane cannot be directly measured and determined is avoided, and the accuracy of the processing size of the ETFE membrane is ensured; the method of fixing the four sides of the ETFE membrane firstly and then pressing the middle of the fixed membrane is adopted to achieve the effect of presenting the curved surface of the steel skeleton, the condition that each triangle in the special-shaped steel skeleton is divided into cells to process a membrane is avoided, and the cutting amount and the material waste of the membrane are reduced.
Drawings
Fig. 1 is a schematic structural view of one of the main unit cells and a plurality of sub-unit cells therein;
fig. 2 is a schematic drawing illustrating a stretching direction of the ETFE membrane constructed in step C1;
fig. 3 is a schematic drawing illustrating a stretching direction of the ETFE membrane constructed in step C2;
fig. 4 is a schematic drawing illustrating a stretching direction of the ETFE membrane constructed in step C3;
fig. 5 is a schematic drawing illustrating a stretching direction of the ETFE membrane constructed in step C4.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
As shown in FIG. 1, a construction method of a spatial curved surface special-shaped steel skeleton supporting type single-layer ETFE membrane structure comprises the following steps,
step A: building a main support steel pipe 1 to form a special-shaped steel framework according to design requirements, and then building a secondary support steel pipe 3 in each main unit cell of the special-shaped steel framework to form a secondary unit cell 2; preferably, a plurality of secondary support steel pipes 3 are built in each main unit cell of the special-shaped steel framework to form a plurality of secondary unit cells 2;
and B: measuring the sizes of the main unit cell 2 and the sub unit cell 2, inputting the size data into design software to generate the size of a single ETFE membrane, cutting out a final construction ETFE membrane according to the size of the single ETFE membrane, and adding membrane side ropes on the periphery of the ETFE membrane;
and C: clamping the periphery of a single ETFE membrane by using a clamping plate strip, pre-fixing the single ETFE membrane on a main support steel pipe 1 around a main unit cell, then tensioning the construction ETFE membrane by using a tightener, and fixing the periphery of the construction ETFE membrane on the main support steel pipe corresponding to the main unit cell by matching a self-tapping screw and the clamping plate strip;
step D: and finally, the middle part of the ETFE membrane is correspondingly fixed on the secondary support steel pipe through the matching of the self-tapping screw and the clamping strip, so that the special-shaped ETFE membrane curved surface effect is formed.
According to the structural requirement of the special-shaped curved surface and the fixing firmness after installation, preferably, each main unit is divided into special-shaped quadrangles with different shapes; each sub-unit cell 2 is triangular.
In order to measure more accurately and avoid the deformation of the special-shaped curved surface in the later period, in the step B, the sizes of the main unit cell and the sub unit cell 2 are measured after the construction of the special-shaped steel framework is completed and the deformation is stable; meanwhile, in step B, the size of the construction ETFE membrane corresponds to the main unit cell size and a margin is left for the fixation in step D.
In the step C, the steps of tensioning the ETFE membrane for construction are as follows:
as shown in fig. 2, step C1: sequentially naming four sides of the ETFE diaphragm to be a first side, a second side, a third side and a fourth side in the circumferential sequence; firstly, tensioning a first side edge, wherein the tensioning direction is along the length direction K of the first side edge, and the first side edge is fixed through a batten 4 after tensioning is finished;
as shown in fig. 3, step C2: then simultaneously tensioning the second side edge and the third side edge, outwards tensioning the second side edge in a direction perpendicular to the length direction L of the second side edge, and fixing the second side edge and the third side edge through a batten 5 after tensioning is finished; stretching the two ends of the third side edge in an outward direction M in an expanding shape;
as shown in fig. 4, step C3: stretching the two ends of the third side edge in an outward direction M in an expanding shape, stretching the fourth side edge outwards in a direction vertical to the length direction N of the fourth side edge, and fixing the fourth side edge by a batten 6 after stretching is finished;
as shown in fig. 5, step C4: and (3) tensioning the two ends of the third side edge in an expanding shape towards the outer direction M, tensioning the third side edge, wherein the tensioning direction is perpendicular to the length direction P of the third side edge and outwards, and fixing the third side edge through a clamping strip 7 after tensioning is finished, so that the whole tensioning of the ETFE diaphragm under construction is finished.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: it is to be understood that modifications may be made to the technical solutions described in the foregoing embodiments, or equivalents may be substituted for some of the technical features thereof, but such modifications or substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (6)
1. A construction method of a spatial curved surface special-shaped steel skeleton support type single-layer ETFE membrane structure is characterized by comprising the following steps,
step A: building a main supporting steel pipe to form a special-shaped steel skeleton according to design requirements, and then building secondary supporting steel pipes in each main unit cell of the special-shaped steel skeleton to form a secondary unit cell;
and B: measuring the sizes of the main unit cells and the sub unit cells, inputting the size data into design software to generate the size of a single ETFE membrane, cutting out a final construction ETFE membrane according to the size of the single ETFE membrane, and adding membrane side ropes on the periphery of the ETFE membrane;
and C: clamping the periphery of a single ETFE membrane by using a clamping plate strip, pre-fixing the single ETFE membrane on a main support steel pipe around a main unit cell, then tensioning the construction ETFE membrane by using a tightener, and fixing the periphery of the construction ETFE membrane on the main support steel pipe corresponding to the main unit cell by matching a self-tapping screw and the clamping plate strip;
step D: and finally, the middle part of the ETFE membrane is correspondingly fixed on the secondary support steel pipe through the matching of the self-tapping screw and the clamping strip, so that the special-shaped ETFE membrane curved surface effect is formed.
2. The construction method of the spatial curved surface special-shaped steel skeleton supported single-layer ETFE membrane structure as claimed in claim 1, wherein in the step A, a plurality of secondary support steel tubes are built in each main unit cell of the special-shaped steel skeleton to form a plurality of secondary unit cells.
3. The construction method of the spatial curved surface special-shaped steel framework supporting type single-layer ETFE membrane structure according to claim 2, wherein in the step A, each main unit is divided into special-shaped quadrangles with different shapes; each sub-unit cell is triangular.
4. The method of claim 3, wherein in step B, the measurement of the sizes of the main cell and the sub-cell is performed after the deformed steel frame is deformed and stabilized.
5. The method as claimed in claim 4, wherein in step B, the size of ETFE membrane is corresponding to the cell size of main unit and there is a margin for fixing in step D.
6. The construction method of the spatial curved surface special-shaped steel skeleton supported single-layer ETFE membrane structure as claimed in claim 4, wherein in the step C, the steps of tensioning the ETFE membrane are as follows:
step C1: sequentially naming four sides of the ETFE diaphragm to be a first side, a second side, a third side and a fourth side in the circumferential sequence; firstly, tensioning a first side edge, wherein the tensioning direction is along the length direction of the first side edge, and the first side edge is fixed after tensioning is finished;
step C2: then simultaneously tensioning the second side edge and the third side edge, outwards tensioning the second side edge in a direction perpendicular to the length direction of the second side edge, and fixing after tensioning is finished; stretching the two ends of the third side outwards in an expanding shape;
step C3: stretching the two ends of the third side outwards in an expanding shape, stretching the fourth side outwards in a direction perpendicular to the length direction of the fourth side, and fixing after stretching is finished;
step C4: and (3) keeping the two ends of the third side edge in an expanding shape to be stretched outwards, stretching the third side edge simultaneously, wherein the stretching direction is perpendicular to the length direction of the third side edge and is outwards carried out, and fixing is carried out after the stretching is finished, so that the whole stretching of the ETFE diaphragm for construction is finished.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112392304A (en) * | 2020-12-07 | 2021-02-23 | 中国建筑第四工程局有限公司 | Stadium ultra-large span PTFE (polytetrafluoroethylene) membrane structure and mounting method thereof |
| CN112832380A (en) * | 2021-01-21 | 2021-05-25 | 湖北玖晟建设有限公司 | Construction method of membrane structure building |
| CN113431193A (en) * | 2021-06-09 | 2021-09-24 | 中交第三航务工程局有限公司 | Quick installation process of special-shaped membrane system for stretching large-span bionic tree |
| CN113622686A (en) * | 2021-07-20 | 2021-11-09 | 中建八局西南建设工程有限公司 | A exhibition membrane platform for ETFE membrane construction |
| CN113882681A (en) * | 2021-10-23 | 2022-01-04 | 北京城建集团有限责任公司 | ETFE membrane tensioning construction process |
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| CN113431193A (en) * | 2021-06-09 | 2021-09-24 | 中交第三航务工程局有限公司 | Quick installation process of special-shaped membrane system for stretching large-span bionic tree |
| CN113622686A (en) * | 2021-07-20 | 2021-11-09 | 中建八局西南建设工程有限公司 | A exhibition membrane platform for ETFE membrane construction |
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