EP2778311A1 - Structure having a core bar - Google Patents

Structure having a core bar Download PDF

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Publication number
EP2778311A1
EP2778311A1 EP12845129.1A EP12845129A EP2778311A1 EP 2778311 A1 EP2778311 A1 EP 2778311A1 EP 12845129 A EP12845129 A EP 12845129A EP 2778311 A1 EP2778311 A1 EP 2778311A1
Authority
EP
European Patent Office
Prior art keywords
core bar
fiber composite
bar
structural member
composite material
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.)
Withdrawn
Application number
EP12845129.1A
Other languages
German (de)
English (en)
French (fr)
Inventor
Young Ho Yoo
Taegeun YOO
A Ram YOO
Sang Sik Kim
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
FAWOO ENGINEERING CO., LTD.
Original Assignee
Fawoo Engineering Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from KR1020110114864A external-priority patent/KR20130049855A/ko
Priority claimed from KR1020120005300A external-priority patent/KR20130084480A/ko
Application filed by Fawoo Engineering Co Ltd filed Critical Fawoo Engineering Co Ltd
Publication of EP2778311A1 publication Critical patent/EP2778311A1/en
Withdrawn legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00—Structural elongated elements designed for load-supporting
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00—Structural elongated elements designed for load-supporting
    • E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
    • E04C3/29—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces built-up from parts of different material, i.e. composite structures
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00—Structural elongated elements designed for load-supporting
    • E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
    • E04C3/29—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces built-up from parts of different material, i.e. composite structures
    • E04C3/292—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces built-up from parts of different material, i.e. composite structures the materials being wood and metal
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00—Structural elongated elements designed for load-supporting
    • E04C3/38—Arched girders or portal frames
    • E04C3/46—Arched girders or portal frames of materials not covered by groups E04C3/40 - E04C3/44; of a combination of two or more materials
    • 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

Definitions

  • the present disclosure relates to a structural member with a core bar which has good mechanical strength and quality properties as compared with an existing metallic structural member, significantly reduces manufacturing costs, enables easy construction of various curved building structures such as a dome-shaped building structure or an arch-shaped building structure without a truss structure or a formwork to foster economic feasibility and excellent construction efficiency, and contributes to the protection of the global environment.
  • Metallic structural members made of, for example, steel or aluminum, are widely used in machines and equipment such as automation equipment as well as in the construction field.
  • Such a metallic structural member has disadvantages in that the member increases material costs, the member is hard to handle and manage due to its heavy weight, and a large amount of carbon gas is discharged when producing and processing the raw material thereof harming the global environment.
  • a curved building structure such as a dome-shaped building structure or an arch-shaped building is preferred due to advantages that no column is needed in a central area and the building structure has an elegant appearance, formworks are constructed or trusses are used when constructing such a curved building structure.
  • a truss T structure is constructed by connecting steel materials such as pipes or iron beams in triangular structures by welding.
  • steel materials such as pipes or iron beams in triangular structures by welding.
  • An aspect of the present disclosure is to provide an improved structural member with a core bar (hereinafter, simply referred to as a "structural member") which has good mechanical strength and quality properties as compared with an existing structural member and may considerably reduce manufacturing costs.
  • Another aspect of the present disclosure is to provide a structural member which enables easy construction of frames of various curved building structures such as a dome-shaped building structure and an arch-shaped building structure using flexure of the structural member without using a truss structure or a formwork, thereby improving construction efficiency.
  • Still another aspect of the present disclosure is to provide a structural member in which bamboo material, which is an excellently profitable natural material, is used as a standardized structural member which is waterproof, fireproof, and mothproof so as to save metallic resources which generate a large amount of carbon gas when being manufactured and processed, thereby contributing to protection of the global environment.
  • a structural member including: at least one elastic core bar formed in a bar shape; and an outer body or an outer cover into which the at least one core bar is inserted.
  • the core bar is formed of at least one of wood such as a bamboo strip or a composite bamboo bar, a synthetic resin material, a glass fiber composite material, and a carbon fiber composite material
  • the outer body or the outer cover is formed of at least one of a metallic material such as aluminum, a synthetic resin material, a glass fiber composite material, and a carbon fiber composite material.
  • the core bar may be formed of a composite bamboo bar, and the composite bamboo bar may be formed by bonding a plurality of bamboo strips into a single body or pressure-molding bamboo which has been split and then crushed.
  • the outer body or the outer cover may be provided with an insertion hole into which the core bar is inserted to be supported.
  • the outer body or the outer cover may be formed in a pipe type or a profile type having at least one T-slot.
  • the outer body may be formed in a guide pile type which includes a main body into which the core bar is inserted and an accessory portion provided on the main body.
  • the accessory portion includes at least one guide wing and/or at least one T-slot which is formed to continuously extend in a longitudinal direction on at least one outer surface of the main body.
  • the accessory portion may be provided on each of two parallel surfaces of the main body and include a T-slot, first and second guide wings positioned at opposite sides with reference to the T-slot, an end of an insulation material being inserted between the first and second guide wings, and a third guide wing positioned to be spaced apart from the second guide wing and to form an air layer between the second guide wing and the third guide wing.
  • the first guide wing and the third guide wing may be formed at outer edges such that an exterior material or an interior material of a building wall may be fixed thereto.
  • the outer body may be formed with at least one protrusion and/or at least one rib, which extends in a longitudinal direction, on an inner wall of the insertion hole into which the core bar is inserted to be supported so as to allow the core bar to be easily inserted and held.
  • the outer body or outer cover may be fastened to the core bar by at least one anchoring unit.
  • the outer body or the outer cover may be formed with at least one partition wall which divides an internal space.
  • a structural member including: an elastic core bar formed in a bar shape; and an outer cover or a coating film formed on an outer surface of the at least one core bar.
  • the core bar is formed of at least one of wood such as a bamboo strip or a composite bamboo bar, a synthetic resin material, a glass fiber composite material, and a carbon fiber composite material.
  • the outer body or the outer cover is formed of at least one of a metallic material such as aluminum, a synthetic resin material, a glass fiber composite material, and a carbon fiber composite material.
  • the outer cover or the coating film may be formed through any one of a method of passing the core par through a molten liquid of a predetermined material and curing the molten liquid, a coating method, a method of fusing a tubular covering material, and a wrapping method.
  • a tubular structure including: a center core bar arranged centrally and positioned in a longitudinal direction; a plurality of core bars arranged around the center core bar and formed in an elastic bar shape; and an outer body or an outer cover into which the center core bar and the plurality of core bars are inserted.
  • the center core may be formed of at least one of a metallic material, a synthetic resin material, a glass fiber composite material, and a carbon fiber composite material.
  • the plurality of core bars may be formed of at least one of wood such as a bamboo strip or a composite bamboo bar, a synthetic resin material, a glass fiber composite material, and a carbon fiber composite material.
  • the outer body or the outer cover may be formed of at least one of a metallic material such as aluminum, a synthetic resin material, a glass fiber composite material, and a carbon fiber composite material.
  • a structural member configured as described above since a substantial proportion of the configuration of the structural member may be formed using, for example, a bamboo material which is relatively inexpensive and light and has a higher tensile strength than a steel material, it is possible to provide a the structural member which has good mechanical strength and to save a metallic material which is an expensive resource compared to an existing structural member which is formed wholly of a metallic material. As a result, it is possible to reduce the manufacturing costs and, thus, obtain substantial economic benefits.
  • frameworks of various curved building structures such as a dome-shaped building structure or an arch-shaped building structure can be easily constructed using the flexible property of the structural member according to the present disclosure, no formwork is needed and the frameworks are significantly simplified in construction as compared with a truss. Thus, construction efficiency can be remarkably improved.
  • a bamboo material which is an excellently profitable natural material, may be configured to be used as a structural member which is standardized and is waterproof, fireproof, and mothproof, it is possible to save metallic resources, which exhaust large amounts of carbon gas during manufacturing and processing for such a structural member, thereby contributing to protection of the global environment.
  • a structural member 1 with a core bar (hereinafter, simply referred to as a "structural member 1") includes at least one elastic core bar 10 formed in a bar shape, and an outer body 20 or an outer cover 20A into which the at least one core bar 10 is inserted.
  • the core bar 10 is formed of at least one of wood such as a bamboo strip 11 or a composite bamboo bar 10A, a synthetic resin material, a glass fiber composite material, and a carbon fiber composite material.
  • the outer body 20 or the outer cover 20A is formed of at least one of a metallic material such as aluminum, a synthetic resin material, a glass fiber composite material, and a carbon fiber composite material.
  • the core bar 10 is formed of the composite bamboo bar 10A which has a high flexural strength, tensile strength, and restoration elasticity in which the composite bamboo bar 10A may be formed by bonding a plurality of bamboo strips 11 into a single body or through compression-molding of bamboo in which bamboo is split, crushed, and compressed to be molded.
  • bamboo which grows 1 m or more every day is the most exuberantly growing plant on earth. Since the harvest age of high quality bamboo is three to four years, the production period of bamboo is considerably short compared to ordinary wood and, thus, bamboo is very profitable. Further, bamboo is an environment-friendly material which generates an extremely small amount of carbon gas until it is processed for use as compared with a metallic material.
  • bamboo is an excellent construction material in that it has high weight strength in tensile strength as compared with steel material and has a high flexural strength and restoration elasticity.
  • Each bamboo strip 11 is formed by splitting and processing bamboo in a bar shape having an optional cross-sectional shape.
  • the density of fibrous tissue is gradually lowered from a surface layer portion having dense fibrous tissue to an inner layer portion having relatively loose tissue.
  • a section from the surface layer portion to a middle layer portion which remains by removing the outermost layer and the inner layer may be used for the bamboo strip 11 of the present disclosure.
  • the bamboo strip 11 or the composite bamboo bar 10A may be subjected to a carbonization process.
  • a structural member 1 according to the present disclosure which includes the core bar 10 formed of the composite bamboo bar 10A as described above or the like as a main constitutional element, has a high yield strength in relation to the pressure by a load W and is excellent in restoration elasticity against flexural deformation, thereby enabling construction of a durable structure which may be hardly deformed and damaged, as illustrated in FIG. 2 .
  • FIG. 4a illustrates an exemplary embodiment in which the core bar 10 inserted into one outer body 20 or outer cover 20A is formed by a single body
  • FIG. 4b illustrates an exemplary embodiment in which the core bar 10 is formed by two members.
  • an insertion hole 21 is formed in a longitudinal direction through the outer body 20 or the outer cover 20A in which the core bar 10 is inserted into the insertion hole 21 to be supported.
  • the outer body 20 or the outer cover 20A may be formed in a pipe type 201 (see FIG. 5 ) or a profile type 202 including one or more T-slots 22 (see FIG. 6 ).
  • the outer body 20 or the outer cover 20A of the pipe type 201 may be formed in a circular cross-section (see FIG. 5a ), a polygonal cross-section including a rectangular cross-section (see FIGs. 5b and 5c ), or the like.
  • the outer body 20 or the outer cover 20A of the profile type 202 is provided with one or more T-slots 22 extending in the longitudinal direction, the outline on the cross-section thereof may be formed in a circular shape (see FIG. 6a ), a polygonal shape including a rectangular shape (see FIG. 6b ), or the like.
  • the outer body 20 is formed in a guide pile type 203 which is provided with an accessory portion 203b on a main body 203a into which the core bar 10 is inserted, and the accessory portion 203b may include at least one of one or more guide wings 23 and one or more T-slots 22 which are continuously formed in the longitudinal direction on one or more outer surfaces of the main body 203a.
  • the outer body 20 of the guide pile type 203 may be usually used as a framework of a pre-fabricated wall in a building.
  • the accessory portion 203b is provided on each of two parallel surface of the body 203a and includes a T-slot 22, first and second guide wings 231 and 232 positioned at opposite sides with reference to the T-slot 22 in which an end of an insulation member 65 is inserted between the first and second guide wings 231 and 232, and a third guide wing 233 positioned to be spaced apart from the second guide wing 232 and form an air layer with the second guide wing 232.
  • the first guide wing 231 and the third guide wing 233 may be formed on outer edges such that an outer exterior material 61 or an interior material 63 of a building wall can be fixed thereto.
  • a plurality of structural members 1 are arranged at predetermined intervals using the T-slots 22, spacers 50, and fastening members 41, and an insulation material 65 is installed in a vertical arrangement space of the spacers 50.
  • the insulation material 65 may be simply installed by inserting an end of the insulation material 65 between the first guide wing 231 and the second guide wing 232.
  • an exterior material 61 is installed using the first guide wings 231 in which an external panel 611 may be installed first and a waterproof sheet 612 and a tile unit 613 may be sequentially attached.
  • a gypsum board 631 and an interior panel 632 which are the interior materials 63 may be sequentially attached using the third guide wings 233.
  • an air layer 24 is formed between the second guide wings 232 and the third guide wings 233, thereby substantially improving heat insulation performance, and an auxiliary air layer corresponding to the thickness of the first guide wings 231 is formed to form dual air layers 241, thereby further improving the heat insulation performance.
  • the thicknesses of the wall and the insulation material 65 may be reduced.
  • the outer body 20 may be formed with at least one protrusion 211 and/or at least one rib, which extend in a longitudinal direction, on an inner wall of the insertion hole 21 into which the core bar 10 is inserted so as to allow the core bar 10 to be easily inserted and held.
  • the protrusions 211 of the outer body 20 are formed to hold each corner portion of the core bar 10 in two directions and to form an adhesive introduction space 215 at each corner portion.
  • the outer body 20 or the outer cover 20A may be fastened to the core bar 10 by one or more anchoring units 30.
  • the anchoring units 30 are fastened in order to prevent the outer body 20 from being released in a situation where the outer body 20 is pulled out when interconnecting and assembling the structural members 1, and, for example, screws may be used as the anchoring units 30.
  • the outer body 20 or the outer cover 20A is formed with at least one partition wall 27 that divides the internal space thereof.
  • the strength of the structural member may be increased and core bars 10 may be inserted into only some of a plurality of insertion holes 21 (see FIG. 10b ).
  • a structural member 1A includes at least one elastic core bar 10 formed in a bar shape, and an outer cover 20A or a coating film 20B formed on the outer surface of the at least one core bar 10.
  • the core bar 10 may be formed of at least one of wood such as bamboo strips or a composite bamboo bar 10A, a synthetic resin material, a glass fiber composite material, and a carbon fiber composite material
  • the outer cover 20A or the coating film 20B may be formed of at least one of a metallic material such as aluminum, a synthetic resin material, a glass fiber composite material, and a carbon fiber composite material.
  • the outer cover 20A or the coating film 20B may be formed through any one of a method of passing the core bar 10 through a molten liquid of a predetermined material and curing the molten liquid, a coating method, a method of fusing a tubular covering material, and a wrapping method.
  • a structural member 1B includes a center core bar 10C arranged centrally and positioned in the longitudinal direction, a plurality of bar-shaped core bars 10 which are elastic and are arranged around the center core bar 10C, and an outer body 20 or an outer cover 20A into which the center core bar 10C and the plurality of core bars 10 are inserted.
  • the center core bar 10C is formed of at least one of a metallic material, a synthetic resin material, a glass fiber composite material, and a carbon fiber composite material
  • the core bars 10 is formed of at least one of wood such as bamboo strips or a composite bamboo bar 10A, a synthetic resin material, a glass fiber composite material, and a carbon fiber composite material
  • the outer body 20 or the outer cover 20A is formed of at least one of a metallic material such as aluminum, a synthetic resin material, a glass fiber composite material, and a carbon fiber composite material.
  • the center core bar 10C is formed of, preferably, a metallic material having a high elastic strength, and is formed in, for example, a pipe shape or a bar shape having an optional cross-sectional shape and continuously extending in the longitudinal direction.
  • the strength of the structural member may be enhanced.
  • a structural member according to the present disclosure is provided with an elastic core bar 10 positioned within an outer body 20, an outer cover 20A, or a coating film 20B (hereinafter, commonly referred to as an "outer body") which is generally formed of a metallic material such as aluminum or a synthetic resin material.
  • the core bar 10 that occupies a substantial portion of the configuration of the structural member may be formed using, for example, a bamboo material which is relatively inexpensive and light and has a higher tensile strength than steel material.
  • a structural member which provides has good mechanical strength saves a metallic material which is an expensive resource, thereby considerably reducing the manufacturing costs, and has a reduced weight allowing it to be easily handled and managed, as compared with an existing structural member which is wholly formed of a metallic material.
  • the structural member of the present disclosure may form a rigid curved framework using its flexural property.
  • FIG. 13 illustrates a flexed state of a structural member 1, 1A or 1B according to an exemplary embodiment of the present disclosure in which a composite bamboo bar 10A is employed as the core bar 10.
  • a composite bamboo bar 10A is employed as the core bar 10.
  • the structural member 1, 1A, or 1B when a linear specimen of the structural member 1, 1A, or 1B is flexed with reference to line B-B', a portion positioned farther away from the central point P in a direction B, the structural member should be more expanded and a portion positioned farther away from the central point P in a direction B', the structural member should be more contracted (see direction indicated by arrows).
  • the flexural strength of the composite bamboo bar 10A is substantially increased compared to a case when the bamboo strips are individually separated from each other.
  • the shape of the outer body 20 is deformed while the surface thereof is dented to reduce the inner space as much as possible.
  • the composite bamboo bar 10A is inserted therein, the flexural deformation is converted into a force pressing the composite bamboo bar 10A such that the composite bamboo bar 10A may prevent the flexural deformation of the outer body 20 and the elastic strength of the outer body may be improved.
  • the deformation of the outer body 20 is also increased.
  • the compressive force applied to the core bar 10 by the outer body 20 is increased and the compressive force increases the elastic strength of the structural member as a whole.
  • the structural member according to the present disclosure has high yield strength against a load pressure and is hardly deformed and damaged due to restoration elasticity against flexural deformation such that a structure employing the structural member can be rigidly retained.
  • the structure member according to the present disclosure which is substantially smaller in size and weight compared with a conventional steel truss structure, may be easily handled and managed.
  • the strength of the structural member having a closed space corresponding to the insertion hole 21 according to the present disclosure is substantially increased as compared to those having a partially opened space, and a longer circumferential length is more advantageous.
  • the circumferential length of the closed space is substantially increased as compared with an existing profile structural member of the same standard, and the strength of the core bar 10 is added thereto, thereby further increasing the strength of the structural member.
  • the structural member 1 of the present disclosure which is made according to the same standard as the conventional aluminum profile and includes an outer body 20 formed in the profile type 202 (see FIG. 6b ) has a cross-sectional area of not more than 380 mm 2 while the compared object has a cross-sectional area of about 726 mm 2 .
  • the used metallic material is reduced by about half allowing the material costs to be significantly reduced.
  • the circumferential length of the insertion hole 21 which is the closed space is larger than that of the closed space 210 of the prior art and the strength of the core bar 10 is additionally added, the strength of the structural member 1 according to the present disclosure is significantly high.
  • the structural member 1, 1A or 1B which has good mechanical strength, elastic strength and durability and is economically feasible as compared with an existing structural member, enables rigid and easy construction of a curved building structure such as a dome-shaped structure or an arch-shaped structure as well as a linear building structure and may be applied to the various structures of the mechanical equipment field such as tents, hangers, or guardrails.
  • an exterior material 61 and an interior material 63 may be guided to be easily assembled, an air layer 24 is formed to improve heat insulation performance, and a pre-fabricated wall may be mounted while installing a power cable 81 or the like in the space of the air layer 24,
  • Such pre-fabricated walls may be mounted not only in a linear form, but also in a curved form.
  • the frameworks of a curved building structure using the structural members 1, 1A or 1B may be formed and installed in an optionally curved shape by bending the structural members, the curved building structure is significantly simple in construction as compared to a truss structure, and no formwork is needed. Thus, construction efficiency can be enhanced. In addition, a relatively large load can be supported by the high flexural strength and residual restoration elasticity.
  • the core bar 10 formed of the composite bamboo bar 10A or the like enables insertion of insert nuts or direct fastening of screws, connection and assembly in the longitudinal direction can be easily performed without a separate tapping work.
  • bamboo has limits as a structural member due to difficulties in standardization, waterproofing, fireproofing, or the like.
  • bamboo material is processed as a composite bamboo bar 10A or the like and an outer body 20 or the like is used such that the bamboo material is used as a structural member that is standardized and is waterproof, fireproof, mothproofand the like.
  • the present disclosure enables a metallic resource which generates a large amount of carbon gas in manufacturing and processing to be saved and, thus, may contribute to the protection of the global environment.
  • the present disclosure provides a structural member which has excellent mechanical strength and quality properties compared to an existing metallic structural member, significantly reduces manufacturing costs and enables easy construction of frameworks of various curved building structures such as a dome-shaped structure or an arch-shaped structure without using a truss structure or a formwork.
  • the structural member according to the present disclosure is economically feasible and excellent in construction efficiency and may also contribute to the protection of the global environment. Consequently, the present disclosure is very excellent in industrial applicability.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Rod-Shaped Construction Members (AREA)
EP12845129.1A 2011-11-06 2012-10-31 Structure having a core bar Withdrawn EP2778311A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
KR1020110114864A KR20130049855A (ko) 2011-11-06 2011-11-06 탄성막대구조체
KR1020120005300A KR20130084480A (ko) 2012-01-17 2012-01-17 탄성을 갖는 구조물용 골재
PCT/KR2012/009031 WO2013066032A1 (ko) 2011-11-06 2012-10-31 코어바를 구비한 구조물 부재

Publications (1)

Publication Number Publication Date
EP2778311A1 true EP2778311A1 (en) 2014-09-17

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP12845129.1A Withdrawn EP2778311A1 (en) 2011-11-06 2012-10-31 Structure having a core bar

Country Status (6)

Country Link
US (1) US20140283473A1 (ja)
EP (1) EP2778311A1 (ja)
JP (1) JP2014532823A (ja)
CN (1) CN104136696A (ja)
AU (1) AU2012333282A1 (ja)
WO (1) WO2013066032A1 (ja)

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CH713452A1 (fr) * 2017-02-13 2018-08-15 Ustinov Igor Système de construction pour un module d'une habitation.
CN107083820A (zh) * 2017-06-08 2017-08-22 南京林业大学 一种竹材－钢夹心管
US10590650B2 (en) * 2017-06-20 2020-03-17 Robert Curd Arch having an internal tension member
CN109024893A (zh) * 2018-07-24 2018-12-18 清华大学 一种自体成型弹性杆空间曲面编织结构体系及其施工方法

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Also Published As

Publication number Publication date
JP2014532823A (ja) 2014-12-08
US20140283473A1 (en) 2014-09-25
CN104136696A (zh) 2014-11-05
AU2012333282A8 (en) 2014-06-26
WO2013066032A1 (ko) 2013-05-10
AU2012333282A1 (en) 2014-06-19

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