KR101513055B1 - Prefabricated steel frame for composite member of steel and concrete - Google Patents

Prefabricated steel frame for composite member of steel and concrete Download PDF

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Publication number
KR101513055B1
KR101513055B1 KR1020140036510A KR20140036510A KR101513055B1 KR 101513055 B1 KR101513055 B1 KR 101513055B1 KR 1020140036510 A KR1020140036510 A KR 1020140036510A KR 20140036510 A KR20140036510 A KR 20140036510A KR 101513055 B1 KR101513055 B1 KR 101513055B1
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KR
South Korea
Prior art keywords
lattice material
steel
outer flange
prefabricated
lattice
Prior art date
Application number
KR1020140036510A
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Korean (ko)
Inventor
이승우
이승환
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이승우
이승환
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Publication date
Application filed by 이승우, 이승환 filed Critical 이승우
Priority to KR1020140036510A priority Critical patent/KR101513055B1/en
Priority to SG11201608676XA priority patent/SG11201608676XA/en
Priority to CN201480078994.7A priority patent/CN106460382B/en
Priority to PCT/KR2014/012331 priority patent/WO2015147414A1/en
Application granted granted Critical
Publication of KR101513055B1 publication Critical patent/KR101513055B1/en

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    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00—Structural elongated elements designed for load-supporting
    • E04C3/30—Columns; Pillars; Struts
    • E04C3/34—Columns; Pillars; Struts of concrete other stone-like material, with or without permanent form elements, with or without internal or external reinforcement, e.g. metal coverings
    • 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
    • E04C3/293—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 steel and concrete

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
  • Rod-Shaped Construction Members (AREA)

Abstract

The present invention relates to a prefabricated steel frame for a steel-concrete composite member for connecting adjoining sections of steel to a lattice material and joining the formwork to the outside to form a prefabricated single member.
A prefabricated steel frame for a steel-concrete composite member according to the present invention is installed in a steel-concrete composite member used as a column or a beam having a polygonal cross-sectional shape, and includes a plurality of steel bars spaced apart from a member surface of the member by a predetermined distance; A lattice material joined to the outside of the a-shaped steel adjacent to both ends so as to interconnect the adjacent a-shaped steel; And a die coupled to the outside of the lattice material; Wherein the lattice material comprises an inner flange coupled to an outer surface of the a-shaped steel, a web that is vertically bent outward at one end of the inner flange, and an outer flange that is vertically bent upwardly or downwardly from the other end of the web, And a reinforcing portion for suppressing warpage of the outer flange is further provided on one side of the outer flange.

Description

{Prefabricated steel frame for composite members of steel and concrete}

The present invention relates to a prefabricated steel frame for a steel-concrete composite member for connecting adjoining sections of steel to a lattice material and joining the formwork to the outside to form a prefabricated single member.

Steel-concrete composite members are made of steel and concrete so that strength of steel and concrete can be expressed in structural members such as columns or beams.

For example, a pre-assembled composite member is used, which is made by joining a reinforcing bar or a lattice frame to the surface of a section steel and then pouring concrete on the site. A permanent mold for a pre-assembled column integrally joining the pre- (Patent No. 127449) have been disclosed.

Further, as shown in FIG. 1, by complementing the registered patent and combining the deck deck formwork with the pre-assembled frame by mechanical coupling only without the welding process, workability and stability can be improved and the concrete side pressure can be effectively supported A technique for a monolithic pre-assembled column of a golf deck form was filed (Patent Application No. 10-2013-122455).

In this application technique, the lattice material 12 and the die 13 located outside the shank 11 are fastened together by a direct screw or a nail gun by a nail gun. 2, the outer flange 123 of the Z bar, which is the lattice material 12, is deformed inwardly as shown in FIG. 2 by applying an external force from the outside to join the lattice material 12 and the die 13, And the like.

1, the technique of the present application is such that the one-side lattice material 12 is elongated at the corners where the lattice materials 12 meet with each other, and the adjacent lattice material 12 is placed on the one-side lattice material 12 ). Therefore, the one-side lattice material 12 protrudes outwardly from the a-shaped steel 11 to form a cantilever, so that the deformation of the bottom of the lattice material 12 due to the load of the die 13 can occur. In addition, there is a problem in that the concrete is not filled up tightly because there are many sections in the joining portion between the adjacent lattice materials 12.

In order to solve the above problems, the present invention provides a prefabricated steel-concrete composite member capable of suppressing flexural deformation of an outer flange of a lattice material due to an external force.

The present invention simplifies the details of joints between adjacent lattice materials and minimizes the portion of the lattice material protruding outwardly of the a-shaped steel, thereby reducing the risk of deformation due to die load, To provide a prefabricated frame for composite members.

According to an aspect of the present invention, there is provided a steel-concrete composite member for use in a column or a beam having a polygonal cross-sectional shape and having a plurality of A section steel; A lattice material joined to the outside of the a-shaped steel adjacent to both ends so as to interconnect the adjacent a-shaped steel; And a die coupled to the outside of the lattice material; Wherein the lattice material comprises an inner flange coupled to an outer surface of the a-shaped steel, a web that is vertically bent outward at one end of the inner flange, and an outer flange that is vertically bent upwardly or downwardly from the other end of the web, And a reinforcement for restraining a flexural deformation of the outer flange is further provided on one side of the outer flange.

According to another preferred embodiment of the present invention, the reinforcing portion is formed to extend vertically inwardly from the other end of the outer flange, thereby forming a prefabricated steel frame for a steel-concrete composite member.

According to another preferred embodiment of the present invention, the reinforcing portion is a reinforcing rib provided between the joint portion of the outer flange and the web.

According to another preferred embodiment of the present invention, the die is joined to the lattice material by a nail, and the outer peripheral surface of the nail is subjected to a knurling treatment.

According to another preferred embodiment of the present invention, both end portions of the lattice material are cut at 45 degrees and are mated with adjacent lattice materials.

According to another preferred embodiment of the present invention, at one end of the lattice material, a first protrusion is formed in the upper portion of the outer flange and a first protrusion is formed in the longitudinal direction of the lattice material, Wherein the first projecting portion and the second projecting portion are each supported by an outer flange end of the adjacent lattice material.

According to another preferred embodiment of the present invention, there is provided a prefabricated steel frame for a steel-concrete composite member, characterized in that a concrete flow hole is formed at a site where the web of the lattice material is cut at 45 degrees.

According to another preferred embodiment of the present invention, the mold is a deck plate formed by folding a metal plate so as to alternately form a floor and a valley, and the deck plate is coupled such that the direction of the valley is parallel to the longitudinal direction of the member, And a floor portion of the deck plate is vertically bent and coupled.

According to another preferred embodiment of the present invention, a flat plate is coupled to an inner surface of a deck plate formed by folding a metal plate so as to form alternating ridges and valleys, wherein the steel plate- to provide.

According to another preferred embodiment of the present invention, there is provided a steel-concrete composite member according to another aspect of the present invention, wherein one end is connected between the a-shaped steel and the lattice material, and the other end is further comprised of a sloped material, Provide an assembly frame.

According to another preferred embodiment of the present invention, the pre-assembled frame is constructed by connecting a plurality of pre-assembled frames in the longitudinal direction, wherein the a-shaped beams of the one-side pre-assembled frame and the other- And the lattice material is joined to the a-shaped steel at the outer surface of the connecting plate. The present invention also provides a prefabricated steel frame for a steel-concrete composite member.

The effects of the present invention are as follows.

First, the reinforcing portion is provided on one side of the outer flange of the lattice material, so that the flexure deformation of the outer flange can be suppressed.

Second, both ends of the lattice material are cut at 45 degrees so that the adjacent lattice materials are easily joined together, so that deformation due to the lattice material portion protruding outside the a-shaped steel can be prevented, and the concrete can be expected to be laid tight at the joining portion of the adjacent lattice materials .

Third, the outer flange of the lattice member may have a first protrusion and a second protrusion formed at one end and the other end, respectively, so that the first and second protrusions of the adjacent lattice material are mutually engaged to prevent deformation of the outer flange end .

Fourth, by forming a concrete flow hole at the end of the lattice material cut at 45 degrees, web deformation of the lattice material can be minimized.

Fifth, by vertically bending the floor of the deck plate formwork at the member edge, it is possible to prevent the concrete paste from leaking through the joining portion of the member edge.

Sixth, by combining a flat thin plate on the inner side of the golf deck plate, it is possible to reduce the carrying and weight burden by making it lightweight while maintaining the form rigidity, and the member surface can be made flat.

Seventhly, it is possible to prevent the side sway of the prefabricated frame by providing the inclined members whose one end and the other end are positioned between the a-shaped steel and the lattice material and between the adjacent a-shaped steel and the lattice material, respectively.

Eighth, it is possible to prevent the interference between the connecting plate and the lattice material at the joint portion of the prefabricated frame by connecting the outer surface of the a-shaped steel frame of the adjacent line assembly frame with the connecting plate and placing the lattice material on the outer surface of the connecting plate, And buckling of the connecting plate can be prevented.

1 is a perspective view showing an embodiment of a conventional prefabricated steel-concrete composite member.
2 is an enlarged cross-sectional view of the portion 'A' of FIG. 1;
3 is a plan view showing an embodiment of a prefabricated framework for a steel-concrete composite member according to the present invention.
4 is a perspective view showing another embodiment of a prefabricated framework for a steel-concrete composite member according to the present invention.
5 is an enlarged cross-sectional view of the portion 'B' of FIG. 4;
6 is a perspective view showing an embodiment of a lattice material;
7 is a perspective view showing another embodiment of the lattice material.
8 is a perspective view showing a coupling relation between adjacent lattice materials;
FIG. 9 is a plan view of a part of a pre-assembled frame for a steel-concrete composite member according to an embodiment of the present invention. FIG.
10 is a perspective view showing another embodiment of the form.
11 and 12 are perspective views each showing a part of another embodiment of a prefabricated framework for a steel-concrete composite member according to the present invention.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings and preferred embodiments.

FIG. 3 is a plan view showing an embodiment of a prefabricated frame for a steel-concrete composite member according to the present invention, FIG. 4 is a perspective view showing another embodiment of a prefabricated frame for a steel- 4 is an enlarged cross-sectional view taken along line 'B' in FIG.

3 to 5, the prefabricated steel frame for a steel-concrete composite member of the present invention is installed on a steel-concrete composite member 1 used as a column or a beam having a polygonal sectional shape, (11) arranged so as to be spaced apart from the surface of the member (1) of the body (1) by a predetermined distance; A lattice material (12) joined to the outside of the a-shaped steel (11) at both ends so as to interconnect the adjacent a-shaped steel (11); And a die (13) coupled to the outside of the lattice material (12); Wherein the lattice material 12 comprises an inner flange 121 coupled to an outer surface of the a section 11, a web 122 vertically bent outwardly from the one end of the inner flange 121, And an outer flange 123 which is vertically bent upward or downward from the other end of the outer flange 123 and to which the formwork 13 is coupled. In one side of the outer flange 123, (124) is further provided.

The present invention relates to a pre-assembled frame for steel-concrete composite members for use as a column or beam member by combining steel and concrete. Although the accompanying drawings show an embodiment of the pillar member, the present invention is also applicable to the pillar member.

The a-shaped beams 11 are disposed at respective corners of the member 1 and are spaced apart from the surface of the member 1 by a predetermined distance so as to secure a coating thickness of a predetermined size.

The lattice material 12 is joined to the outside of the a-shaped steel pipe 11 at both ends so as to interconnect the adjacent a-shaped steel pipes 11, thereby integrating the adjacent a-shaped steel pipes 11. Also, since the rigidity of the prefabricated frame is increased by joining the lattice material 12 to the section steel 11, deformation of the prefabricated frame is minimized during transportation and installation.

A plurality of lattice members 12 are disposed at predetermined intervals along the longitudinal direction of the member 1. The lattice members 12 may be connected to the A-shaped members by means of rivets, bolts, welding, etc. However, So that the prefabricated frame can be produced.

The lattice material 12 includes an inner flange 121 coupled to the outer surface of the shank 11, a web 122 vertically bent outwardly from one end of the inner flange 121, And a reinforcing portion 124 formed of an outer flange 123 to which the form 13 is coupled and which is vertically bent in a downward direction and which is generally z-shaped and suppresses warping of the outer flange 123 is further provided.

When the die 13 and the lattice material 12 to be described later are coupled by a direct coupling screw or fastened by a nail gun to a nail N, the reinforcing portion 124 is formed on the outer side of the lattice material 12 Thereby preventing the flange 123 from being deformed inward.

As shown in FIG. 5, the reinforcing portion 124 may be formed so as to be vertically bent and extended inward from the other end of the outer flange 123.

The nail N connecting the lattice material 12 and the die 13 is subjected to a knurling process so as to form a saw tooth shape or a rugged shape on the outer circumferential surface in a horizontal or inclined manner, Can be increased.

The die 13 is coupled to the outside of the lattice material 12 and may be a permanent die or may be demolded after curing of the concrete.

The formwork 13 acts as a bracing to suppress lateral deformation of the prefabricated framework.

The mold 13 is preferably combined with a factory for convenience of construction, but the present invention is not limited thereto, and on-site coupling is also possible in some cases.

It is possible to complete the member 1 by installing the field concrete on the pre-assembled frame.

6 is a perspective view showing an embodiment of the lattice material.

As shown in FIG. 6, the reinforcing portion 124 may be formed of a reinforcing rib provided between the outer flange 123 and the joint portion of the web 122.

The reinforcing ribs may be formed by welding a separate rib or by pressing the corners of the Z-shaped steel to project inward.

7 is a perspective view showing another embodiment of the lattice material.

7, both end portions of the lattice material 12 in the present invention are cut at 45 degrees and mated with the adjoining lattice material 12. As shown in Fig.

When cutting both ends of the lattice material 12 at 45 degrees, the inner flange 121 and the outer flange 123 of the lattice material 12 form a straight line, and the web 122 forms an inclined plane.

The deformation of the lattice material 12 due to the load of the die 13 attached to the outside of the lattice material 12 can be minimized by minimizing the portion of the lattice material 12 that protrudes outside the a- .

Further, since the joining portion between adjacent lattice materials 12 can be simply constructed, the concrete can be laid tightly.

8 is a perspective view showing a coupling relationship between adjacent lattice materials.

8, a first protrusion 125 is formed at an upper portion and a lower portion of the outer flange 123 at one end of the lattice material 12, respectively, in the longitudinal direction of the lattice material 12, A second projection 126 extends in the longitudinal direction of the lattice material 12 at the center of the flange 123 so that the first projection 125 and the second projection 126 are spaced apart from each other Can be supported by the end of the outer flange 123.

The end portion of the outer flange 123 of the lattice material 12 has free ends at both the lower side and the side portion, even if the reinforcement portion 124 is provided. Therefore, as shown in FIG. 7, the free end portion can be easily deformed inward by an external force.

Therefore, in the present invention, the first and second protrusions are formed at both ends of the outer flange 123 of the lattice material 12, and the lattice material 12 The outer flange 123 located at the other end of the outer flange 123 is engaged with the outer flange 123 to prevent the end flange 123 from being deformed.

At this time, a concrete flow hole 127 may be formed in a portion where the web 122 of the lattice material 12 is cut 45 degrees as shown in FIGS.

The corner covering portion of the member (1) can be prevented from flowing the concrete by the interference between the b-shaped steel (11) and the lattice material (12).

Therefore, by forming the concrete flow hole 127 at the portion cut at 45 degrees, the deformation of the cut portion web 122 can be minimized and the end portion concrete at the edge of the member 1 can be prevented from being insufficiently filled.

FIG. 9 is a plan view of a part of a prefabricated structure for a steel-concrete composite member according to an embodiment of the present invention.

9, the mold 13 is a deck plate 131 formed by bending a metal plate such that a floor 131a and a valley 131b are alternately formed. The direction of the valley 131b is parallel to the direction in which the member 1 The floor 131a of the golf deck plate 131 may be vertically bent and coupled to a corner portion of the member 1 so as to be parallel to the longitudinal direction.

The golf deck plate serves as a member of a member by closing a side surface or a side surface and a bottom surface of the member.

When the golf deck plate meets with each other at the corners of the members, the ends are not easily coupled with each other, and there is a fear that the concrete paste leaks through the fragile portion when the concrete is laid.

Accordingly, as shown in FIG. 9, the joining portion where the deck plate is joined at the corner of the member is eliminated, and the floor 131a is vertically bent and extended so as to form the corner of the member 1.

10 is a perspective view showing another embodiment of the form.

10, the mold 13 is constructed such that a flat thin plate 132 is coupled to the inner side surface of the golf deck plate 131, which is formed by folding a metal plate such that the floor 131a and the valley 132b are alternately formed .

In the case of the form 13 including the deck plate 131 and the thin plate 132, the rigidity of the form 13 can be maintained, but the advantage is that it is light in weight and is not burdensome.

Since the mold can be manufactured simply by joining the thin plate 132 to the deck plate 131 by tag welding or the like, the mold can be easily manufactured and lightweight so that the mold unit can be made large, The construction efficiency is increased.

In addition, since the flat thin plate 132 is coupled to the side surface of the golf deck plate, the outer surface of the member 1 can be flattened.

11 is a perspective view showing a part of another embodiment of a prefabricated framework for a steel-concrete composite member according to the present invention.

11, the present invention is characterized in that one end is connected between the a-shaped steel 11 and the lattice material 12 and the other end is connected to the slanted material 11 14). ≪ / RTI >

If the formwork is attached to the frame or installed in the field, side sway may occur in the prefabricated frame due to external force such as construction load.

Therefore, the present invention prevents side sway by attaching an inclined material so as to connect adjacent a-shaped steel bars 11.

12 is a perspective view showing a part of another embodiment of a prefabricated framework for a steel-concrete composite member according to the present invention.

12, in the present invention, the prefabricated frame is constructed by connecting a plurality of prefabricated frames in the longitudinal direction, and the a-shaped beams 11 'of the one prefabricated frame to be connected and the a- Is characterized in that the connecting plate 15 connects the outer sides of the shank 11 'and 11' 'and the lattice material 12 is coupled to the shank at the outer surface of the connecting plate 15 do.

Interference may occur between the connection plate 15 and the lattice material 12 when vertically or horizontally adjacent line assembly frames are connected by the connection plate 15.

Thus, by providing the connection plate 15 between the lattice material 12 and the a-shaped steel, interference between the lattice material 12 and the connection plate 15 is solved.

The lattice material 12 prevents deformation of the end portions 11 'and 11 "of the pre-assembled frame, and prevents the buckling of the connecting plate 15 by fixing the connecting plate 15 on the outside.

When the connection plate 15 is thick, the length of the web 122 of the lattice material 12 attached to the outside of the connection plate 15 may be shortened to coincide with the outer surface level of the outer flange 123 of the other lattice material 12 .

1: Steel-concrete composite member 11, 11 ', 11 "
12: Lattice material 121: Inner flange
122: web 123: outer flange
124: reinforced portion 125: first protrusion
126: second protrusion 127:
13: Form 131: Deck plate
131a: floor 131b:
132: thin plate 14: inclined material
15: connection plate C: concrete
N: Nail

Claims (11)

Concrete composite member 1 used as a column or a beam having a polygonal sectional shape,
A plurality of b-shaped sections (11) arranged to be spaced apart from a surface of the member (1) of the member (1) by a predetermined distance;
A lattice material (12) joined to the outside of the a-shaped steel (11) at both ends so as to interconnect the adjacent a-shaped steel (11); And
A die (13) coupled to the outside of the lattice material (12); As shown in FIG.
The lattice material 12 includes an inner flange 121 coupled to an outer surface of the a-shaped steel 11, a web 122 vertically bent outward at one end of the inner flange 121, And an outer flange 123 to which the form 13 is coupled and which is vertically bent upward or downward from the outer flange 123. A reinforcing portion 124 for suppressing warpage of the outer flange 123 is formed at one side of the outer flange 123 And a reinforcing member for reinforcing the reinforced concrete member.
The method of claim 1,
Wherein the reinforcing portion (124) is formed to extend inwardly from the other end of the outer flange (123) to be vertically bent.
The method of claim 1,
Wherein the reinforcing portion (124) is a reinforcing rib provided between a joint portion of the outer flange (123) and the web (122).
The method of claim 1,
Characterized in that the formwork (13) is joined to the lattice material (12) by a nail (N) and the outer surface of the nail (N) is subjected to a knurling treatment.
The method of claim 1,
Wherein both end portions of the lattice material (12) are cut at 45 degrees and mated with adjacent lattice materials (12).
The method of claim 5,
A first protrusion 125 extends in the longitudinal direction of the lattice material 12 at an upper portion and a lower portion of the outer flange 123 at one end of the lattice material 12, The first protrusion 125 and the second protrusion 126 extend in the longitudinal direction of the lattice material 12 so that the end of the outer flange 123 of the adjacent lattice material 12 Wherein the reinforcing member is supported by the reinforcing member.
The method of claim 5,
And a concrete flow hole (127) is formed in a portion where the web (122) of the lattice material (12) is cut at 45 degrees.
The method of claim 1,
The mold 13 is a deck plate 131 formed by bending a metal plate such that a floor 131a and a valley 131b are alternately formed so that the direction of the valley 131b is parallel to the longitudinal direction of the member 1 , And a floor (131a) of the golf deck plate (131) is vertically bent and joined to an edge of the member (1).
The method of claim 1,
Wherein the formwork (13) has a flat steel plate (132) coupled to an inner surface of a deck plate (131) having a metal plate folded to form a floor (131a) and a valley (132b) alternately. Prefabricated Frames for Members.
The method of claim 1,
And one end is further coupled to the lattice material 12 and the other end is connected to the adjacent lattice 11 and the lattice material 12 Prefabricated frame for steel - concrete composite members.
The method of claim 1,
The prefabricated frame is constructed by connecting a plurality of prefabricated frames in the longitudinal direction, and the a-shaped beams 11 'of the one prefabricated frame and the a-shaped beams 11''of the other prefabricated frame are connected to the connecting plate 15, , And the lattice material (12) is joined to the a-shaped steel at the outer surface of the connecting plate (15). The steel-concrete composite member according to claim 1, Assembly frame.
KR1020140036510A 2014-03-28 2014-03-28 Prefabricated steel frame for composite member of steel and concrete KR101513055B1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
KR1020140036510A KR101513055B1 (en) 2014-03-28 2014-03-28 Prefabricated steel frame for composite member of steel and concrete
SG11201608676XA SG11201608676XA (en) 2014-03-28 2014-12-15 Prefabricated steel frame for steel-concrete composite member
CN201480078994.7A CN106460382B (en) 2014-03-28 2014-12-15 The prefabricated frame of steel concrete compound component
PCT/KR2014/012331 WO2015147414A1 (en) 2014-03-28 2014-12-15 Prefabricated steel frame for steel-concrete composite member

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020140036510A KR101513055B1 (en) 2014-03-28 2014-03-28 Prefabricated steel frame for composite member of steel and concrete

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KR101513055B1 true KR101513055B1 (en) 2015-04-17

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CN (1) CN106460382B (en)
SG (1) SG11201608676XA (en)
WO (1) WO2015147414A1 (en)

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* Cited by examiner, † Cited by third party
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KR101609778B1 (en) * 2015-04-30 2016-04-06 (주)센벡스 System for supporting Lightweight form of Composite column of steel and concrete
WO2017034354A1 (en) * 2015-08-25 2017-03-02 (주)센벡스 Structure for fixating deck formwork
WO2018038298A1 (en) * 2016-08-26 2018-03-01 (주)센벡스 Detachable lightweight mold structure

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WO2015147414A1 (en) 2015-10-01
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CN106460382A (en) 2017-02-22

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