CN108643361A - Unit assembled membrane structure - Google Patents
Unit assembled membrane structure Download PDFInfo
- Publication number
- CN108643361A CN108643361A CN201810591661.4A CN201810591661A CN108643361A CN 108643361 A CN108643361 A CN 108643361A CN 201810591661 A CN201810591661 A CN 201810591661A CN 108643361 A CN108643361 A CN 108643361A
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- China
- Prior art keywords
- membrane structure
- membrane
- subelement
- unit assembled
- connector
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000012528 membrane Substances 0.000 title claims abstract description 131
- 239000000463 material Substances 0.000 claims abstract description 22
- 238000009434 installation Methods 0.000 claims abstract description 7
- 238000003491 array Methods 0.000 claims abstract description 5
- 239000010409 thin film Substances 0.000 claims abstract description 3
- 239000010408 film Substances 0.000 claims description 30
- 238000012856 packing Methods 0.000 claims description 4
- 239000010410 layer Substances 0.000 claims 4
- 239000002356 single layer Substances 0.000 claims 1
- 238000006073 displacement reaction Methods 0.000 abstract description 9
- 238000009826 distribution Methods 0.000 abstract description 3
- 229910000831 Steel Inorganic materials 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000011888 foil Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000004321 preservation Methods 0.000 description 2
- 230000008439 repair process Effects 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 1
- 241001232787 Epiphragma Species 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 229920000840 ethylene tetrafluoroethylene copolymer Polymers 0.000 description 1
- 238000005098 hot rolling Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/34—Extraordinary structures, e.g. with suspended or cantilever parts supported by masts or tower-like structures enclosing elevators or stairs; Features relating to the elastic stability
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/32—Arched structures; Vaulted structures; Folded 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
- E04B1/32—Arched structures; Vaulted structures; Folded structures
- E04B1/3205—Structures with a longitudinal horizontal axis, e.g. cylindrical or prismatic 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
- E04B1/32—Arched structures; Vaulted structures; Folded structures
- E04B1/3211—Structures with a vertical rotation axis or the like, e.g. semi-spherical 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
- E04B1/32—Arched structures; Vaulted structures; Folded structures
- E04B2001/3235—Arched structures; Vaulted structures; Folded structures having a grid frame
-
- 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
- E04B1/32—Arched structures; Vaulted structures; Folded structures
- E04B2001/3235—Arched structures; Vaulted structures; Folded structures having a grid frame
- E04B2001/3252—Covering details
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Tents Or Canopies (AREA)
Abstract
The invention discloses a kind of unit assembled membrane structures, installation is on the support members, including multiple membrane structure subelements, first connector and the second connector, each membrane structure subelement continuous close-packed arrays successively, and it is interconnected at handing-over side with adjacent membrane structure subelement, the membrane structure subelement adjacent with supporting member is connect at the handing-over side with supporting member with supporting member, the membrane structure subelement is assembled by membrane body and frame respectively, the membrane body is made using flexible thin-film material, and edge is fixed on frame.Unit assembled membrane structure is combined by the way that membrane structure to be divided into the assembly of one group of membrane structure subelement, is advantageously implemented the membrane structure standardization of products and industrialization, is easily installed and safeguards, play the role of reducing cost, carries efficient；Simultaneously in the case where structure type is constant, is conducive to realize the reasonable adjustment and distribution of rigidity inside membrane structure in the design, forms effective control to membrane structure global displacement, realize making full use of for structural material performance.
Description
Technical field
The invention belongs to space structural systems, and in particular to a kind of unit assembled membrane structure.
Background technology
Architectural exterior-protecting construction refers to the structure for enclosing space surrounding, has the function of the influence for resisting adverse environment.It builds
Membrane material is built as a kind of novel building cladding, can play the role of going along with sb. to guard him simultaneously, decorate, sunshade, heat preservation or sound-absorbing, tool
There is the characteristics of structure is slim and graceful, moulding is abundant, performance is stable, energy conservation and environmental protection, is suitable for realizing large span Lightweight Space structure, profit
The rigidity formed under the action of surface tension with flexible foil body obtains stable structural form, in many large stadiums
To application.
According to Chinese engineering construction association criterion CECS158:The form of 2015 regulation, membrane structure can be divided mainly into entirety
Stretching type, skeleton supporting formula, rope system supporting type, air-supported formula, wherein so-called skeleton supporting formula membrane structure, refers to by steel construction
Or other rigid structures are as load-bearing skeleton, the membrane structure form for the membrane material composition that arrangement is tensioned by design requirement on skeleton.
For frame sand body, as unit membrane body size increases, displacement of the film surface under load action also will therewith
Increase, when film surface displacement reaches a certain level, it is possible to create expendable deformation influences the normal use of membrane structure.In order to
It is all that constraint is set up on film surface to avoid corresponding increase of the film surface global displacement with membrane body size, the counter-measure taken at present
Structure improves overall stiffness of the membrane body under specific load action, controls film surface displacement, and when specific implementation can be attached along film surface
If constraining cable wire；Rigid beam can also be added along film surface within the scope of membrane body, and by membrane body and rigidity on corresponding position
Beam is connected and fixed.Although both methods can make membrane structure displacement be effectively controlled, on the one hand film knot can increased
While structure engineering cost, difficult and risk is brought to design and installation, causes the increase of duration and cost, on the other hand, when
When local failure occurs for membrane structure, it is based on existing structure type, only takes the maintenance mode of sectional repair or integral replacing,
But the former implements operating difficulties, the latter is by making the big increase of maintenance cost.It can be seen that skeleton supporting formula membrane structure form is existing
Film surface Displacement Control Technique scheme in the objectively existing contradiction between cost, efficiency, hinder skeleton supporting formula film knot
The further genralrlization application of structure.
Invention content
The technical problem to be solved in the present invention is to provide a kind of reliable and stable, membrane structure form for being easily installed, Ke Yiti
For enough displacement rigidities, ensure the long-term normal use of membrane structure.
To achieve the above object, the technical scheme is that：
Unit assembled membrane structure includes multiple membrane structure subelements, the first connector and the second connector.Each film knot
Structure subelement is assembled by flexible foil body and rigid frame, and membrane body is made using flexible thin-film material, and edge is fixed on just
On property frame.Each membrane structure subelement continuous close-packed arrays successively, and it is mutual at handing-over side with adjacent membrane structure subelement
It is connected, the membrane structure subelement adjacent with supporting member is connect at the handing-over side with supporting member with supporting member.
As preferred embodiment, the frame facet of membrane structure subelement opens up the connection being evenly arranged along center line of the bar
Hole, connecting hole are through-hole.
As preferred embodiment, after the first connector is arranged on adjacent film structures subelement in corresponding connecting hole
Locking.
As preferred embodiment, uniformly distributed second connector, the second connector and supporting member in supporting member
Connection, and locked after being arranged in the connecting hole of adjacent film structures subelement side.
As preferred embodiment, membrane body is layer single structure.
As preferred embodiment, the membrane body of membrane structure subelement can also be double-layer structure, and between double layer material
Inflation forms pneumatic die cushion.
As preferred embodiment, the membrane body of membrane structure subelement can also be double-layer structure, and between double layer material
Lay packing material).
As preferred embodiment, membrane structure subelement is quadrangle.
As preferred embodiment, membrane structure subelement can also be for triangle.
Compared with prior art, the invention has the advantages that：
On the one hand, unit assembled membrane structure is split by the surface to membrane structure, and it is single to establish one group of membrane structure
The assembly combination of member, makes membrane structure be made of the smaller membrane structure subelement of size, is advantageously implemented the standard of membrane structure product
Change and industrialization so that the difficulties in installation and maintenance of membrane structure is substantially reduced in conjunction with assembling form appropriate, can play reduction at
Originally, efficient effect is proposed.
On the other hand, membrane structure subelement is made of one group of membrane structure subelement comprising rigid frame, changes frame bars
The section shape and size of part can play the role of changing membrane structure subelement rigidity, adjust the shape of membrane structure subelement,
It can play the role of adjusting the distribution of membrane structure overall stiffness.Therefore, unit assembled membrane structure is more advantageous to real in the design
The reasonable adjustment and distribution of rigidity, form effective control to membrane structure global displacement, realize structural material inside existing membrane structure
Performance makes full use of.
Description of the drawings
Fig. 1 is the overall structure diagram of the embodiment 1 of invention unit assembled membrane structure；
Fig. 2 is a kind of quadrangular membrane structural sub-units front schematic view of invention unit assembled membrane structure；
Fig. 3 is a kind of quadrangular membrane structural sub-units assembling mode of invention unit assembled membrane structure；
The connection that Fig. 4 is assembled between the adjacent film structures subelement for the embodiment 1 of invention unit assembled membrane structure
Partial cutaway view；
Fig. 5 is that the membrane structure subelement of the embodiment 1 of invention unit assembled membrane structure is installed on the support members
Installation connection partial cross-sectional view；
Fig. 6 is the membrane structure subelement sectional view of the embodiment 2 of invention unit assembled membrane structure；
Fig. 7 is the membrane structure subelement sectional view of the embodiment 3 of invention unit assembled membrane structure；
Fig. 8 is the overall structure diagram of the embodiment 4 of invention unit assembled membrane structure；
The relationship explanation of label and each composition division name in figure：
1-membrane structure subelement, 11-membrane bodies, 111-rope bands, 12-frames, 13-film fixtures, 14-fastening bolts,
15-packing materials, 121-connecting holes, the 2-the first connector, the 21-the first nut, the 3-the second connector, the 31-the second spiral shell
Mother, 4-supporting members
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiment is only a part of the embodiment of the present invention, instead of all the embodiments.
Embodiment 1
A kind of unit assembled membrane structure as shown in Figure 1, including 36 quadrangular membrane structural sub-units 1 are arranged by 6 rows 6
Continuous close-packed arrays constitute 6 meters of span, long 9 meters of Semicircular arched curved-surface structure successively.Each membrane structure subelement 1 with it is adjacent
Membrane structure subelement 1 handing-over side at interconnect, the membrane structure subelement 1 adjacent with supporting member 4 with adjacent bearing structure
It is connect with supporting member 4 at the handing-over side of part 4.
Membrane structure subelement 1 as shown in Figure 2 is quadrangle, is made of membrane body 11 and frame 12.Membrane structure subelement 1
Boundary is equipped with frame 12, and frame 12 is welded using the hot rolling rectangular tube that section is 80x40x4mm.12 top surface overlying of frame
Epiphragma body 11, membrane body 11 are made using PTFE film material, and 11 shape of membrane body is adapted with the shape with frame 12,11 edge of membrane body
It is fixed on frame 12.
Membrane structure subelement 1 as shown in Figure 3, membrane body 11 are located between film fixture 13 and frame 12, and film fixture 13 is
Membrane body 11 is clamped on steel frame 12 by 5mm thickness aluminium strips by fastening bolt 14.12 top of frame is opened up along steel pipe axis
The circular hole being adapted to 14 diameter of fastening bolt, between adjacent circular holes on the inside of 150mm, 11 edge of membrane body and on film fixture 13 point
Position assembly circular hole corresponding with the circular hole at 12 top of frame is not opened up.The side of frame 12 opens up and first along steel pipe axis again
The connecting hole 121 of the installation requirement of connector 2 or the second connector 3 adaptation, at a distance of 300mm between adjacent pilot hole.
Membrane structure subelement 1 as shown in Figure 4, membrane body 11 are fixed on 12 top of frame, 12 side of frame and adjacent frame
12 connections.The fastening bolt 14 of fixed membrane body is M10 screws, the circular hole at 11 edge of film fixture 13 and membrane body is passed through, in frame 12
It is tightened in the corresponding circular hole in top.11 edge of membrane body wears rope band 111, and film fixture 13 is located at 111 inside of rope band on membrane body 11,
Prevent 11 edge of membrane body from being skidded off between film fixture 13 and frame 12.First connector 2 is M16 bolts, runs through adjacent film structures
It is correspondingly connected with hole 121 on the frame 12 of subelement 1, the first nut 21 is used in combination to lock.
It is illustrated in figure 5 the Semicircular arched curved-surface structure both sides membrane structure subelement 1 adjacent with supporting member 4, membrane body 11
It is fixed on 12 top of frame, 12 side of frame is connect with adjacent supporting member 4.Supporting member 4 is beams of concrete, the second connector
3 be M16 anchor bolts, and pre-plugged exposes top of concrete 100mm in 4 top of supporting member, anchor bolt screw thread.Second connector, 3 anchor
Bolt passes through corresponding connecting hole 121 on the frame 12 of adjacent film structures subelement 1, and the second nut 31 is used in combination to fix locking.
Embodiment 2
The present embodiment is substantially the same manner as Example 1, the difference is that, the film in the membrane structure subelement 1 of the present embodiment
Body 11 is illustrated in figure 6 double-layer structure, is made using the transparent membrane materials of ETFE, and inflation forms pneumatic die cushion between double layer material.
Embodiment 3
The present embodiment is substantially the same manner as Example 1, the difference is that, the film on the membrane structure subelement 1 of the present embodiment
Body 11 is illustrated in figure 7 double-layer structure, is made using PVC film material, and packing material is laid between double layer material, the filling material
Material is heat-preservation cotton.
Embodiment 4
The present embodiment is substantially the same manner as Example 1, the difference is that, a kind of unit assembled film knot as shown in Figure 8
Structure, by 12 triangle membrane structure subelements 1 and 46 quadrangular membrane structural sub-units 1, continuous close-packed arrays constitute one successively
Dome structure with opening.
In the description of the present invention, it is to be understood that, the instructions such as term "upper", "lower", "left", "right", "front", "rear"
Orientation or positional relationship be based on the orientation or positional relationship shown in the drawings, be merely for convenience of description the present invention and simplification retouch
It states, specific direction must be had, with specific azimuth configuration and operation by not indicating or implying the indicated device or unit,
It is thus impossible to be interpreted as limitation of the present invention；In the description of the present invention, term " installation ", " connected ", " connection ", " Gu
It is fixed " etc. shall be understood in a broad sense, for example, " connection " may be a fixed connection, may be a detachable connection, or integrally connect
It connects；It can be directly connected, it can also be indirectly connected through an intermediary.For the ordinary skill in the art, may be used
To understand the concrete meaning of above-mentioned term in the present invention as the case may be.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, any made by repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (9)
1. a kind of unit assembled membrane structure, installation is on the support members, which is characterized in that
Including multiple membrane structure subelements (1), the first connector (2) and the second connector (3), each membrane structure subelement
(1) continuous close-packed arrays successively, and interconnected at handing-over side with the adjacent membrane structure subelement (1), with bearing structure
The adjacent membrane structure subelement (1) of part (4) with the handing-over side of the supporting member (4) at the supporting member (4)
Connection,
The membrane structure subelement (1) is assembled by membrane body (11) and frame (12) respectively, and the membrane body (11) uses flexible
Thin-film material is made, and edge is fixed on the frame (12).
2. unit assembled membrane structure according to claim 1, which is characterized in that the frame of the membrane structure subelement (1)
Frame (12) side opens up the connecting hole (121) being evenly arranged along center line of the bar, and the connecting hole (121) is through-hole.
3. unit assembled membrane structure according to claim 1 or 2, which is characterized in that first connector (2) wears
Locking after in the corresponding connecting hole (121) on the adjacent membrane structure subelement (1).
4. unit assembled membrane structure according to claim 1 or 2, which is characterized in that the supporting member (4) it is upper
Even to lay second connector (3), second connector (3) connect with the supporting member (4), and is arranged in the film
Locking after in the connecting hole (121) of structural sub-units (1).
5. unit assembled membrane structure according to claim 1 or 2, which is characterized in that the membrane structure subelement (1)
Membrane body (11) is single layer structure.
6. unit assembled membrane structure according to claim 1 or 2, which is characterized in that the membrane structure subelement (1)
Membrane body (11) is double-layer structure, and inflation forms pneumatic die cushion between double layer material.
7. unit assembled membrane structure according to claim 1, which is characterized in that the film of the membrane structure subelement (1)
Body (11) is double-layer structure, and packing material (15) is laid between double layer material.
8. unit assembled membrane structure according to claim 1, which is characterized in that the shape of the membrane structure subelement (1)
Shape is quadrangle.
9. unit assembled membrane structure according to claim 1, which is characterized in that the shape of the membrane structure subelement (1)
Shape is triangle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810591661.4A CN108643361A (en) | 2018-06-11 | 2018-06-11 | Unit assembled membrane structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810591661.4A CN108643361A (en) | 2018-06-11 | 2018-06-11 | Unit assembled membrane structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108643361A true CN108643361A (en) | 2018-10-12 |
Family
ID=63752067
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810591661.4A Pending CN108643361A (en) | 2018-06-11 | 2018-06-11 | Unit assembled membrane structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108643361A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110670942A (en) * | 2019-10-15 | 2020-01-10 | 中建三局集团有限公司 | Construction method of space curved surface special-shaped steel skeleton supporting type single-layer ETFE (ethylene-vinyl acetate) film structure |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101068231B1 (en) * | 2011-03-30 | 2011-09-28 | 황양훈 | The membrane construction of assembly type |
| KR101126646B1 (en) * | 2011-09-09 | 2012-03-26 | 황양훈 | The construction of assembly type |
| CN202689357U (en) * | 2012-05-11 | 2013-01-23 | 赵明强 | Membrane structure strong-wind-resistance and load-resistance device |
| CN203977973U (en) * | 2014-06-06 | 2014-12-03 | 无锡创飞科电子科技有限公司 | The combined type air film structure of inflation film building |
| CN204060122U (en) * | 2014-04-16 | 2014-12-31 | 深圳市利源水务设计咨询有限公司 | A kind of pneumatic membrane building and there is the building of this pneumatic membrane building |
| CN208309819U (en) * | 2018-06-11 | 2019-01-01 | 江苏海勃膜科技有限公司 | Unit assembled membrane structure |
-
2018
- 2018-06-11 CN CN201810591661.4A patent/CN108643361A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101068231B1 (en) * | 2011-03-30 | 2011-09-28 | 황양훈 | The membrane construction of assembly type |
| KR101126646B1 (en) * | 2011-09-09 | 2012-03-26 | 황양훈 | The construction of assembly type |
| CN202689357U (en) * | 2012-05-11 | 2013-01-23 | 赵明强 | Membrane structure strong-wind-resistance and load-resistance device |
| CN204060122U (en) * | 2014-04-16 | 2014-12-31 | 深圳市利源水务设计咨询有限公司 | A kind of pneumatic membrane building and there is the building of this pneumatic membrane building |
| CN203977973U (en) * | 2014-06-06 | 2014-12-03 | 无锡创飞科电子科技有限公司 | The combined type air film structure of inflation film building |
| CN208309819U (en) * | 2018-06-11 | 2019-01-01 | 江苏海勃膜科技有限公司 | Unit assembled membrane structure |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110670942A (en) * | 2019-10-15 | 2020-01-10 | 中建三局集团有限公司 | Construction method of space curved surface special-shaped steel skeleton supporting type single-layer ETFE (ethylene-vinyl acetate) film structure |
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