CN107700339B - Wave-shaped steel plate box girder - Google Patents
Wave-shaped steel plate box girder Download PDFInfo
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- CN107700339B CN107700339B CN201711095939.0A CN201711095939A CN107700339B CN 107700339 B CN107700339 B CN 107700339B CN 201711095939 A CN201711095939 A CN 201711095939A CN 107700339 B CN107700339 B CN 107700339B
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- corrugated steel
- top plate
- bottom plate
- plate
- longitudinal
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Classifications
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2/00—Bridges characterised by the cross-section of their bearing spanning structure
- E01D2/04—Bridges characterised by the cross-section of their bearing spanning structure of the box-girder type
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/60—Planning or developing urban green infrastructure
Abstract
The invention discloses a corrugated steel plate box girder, which comprises a concrete pavement layer, a corrugated steel longitudinal top plate, a corrugated steel transverse top plate, a corrugated steel connecting plate, a corrugated steel web, a corrugated steel longitudinal bottom plate and a corrugated steel transverse bottom plate; the corrugated steel longitudinal top plate is connected with the corrugated steel web plate through a corrugated steel connecting plate, and the corrugated steel transverse top plate is arranged below the corrugated steel longitudinal top plate and is fixed with the corrugated steel longitudinal top plate to form a corrugated steel top plate of the box girder; the two ends of the corrugated steel longitudinal bottom plate are respectively connected with the corrugated steel web plates through corrugated steel connecting plates and are used for bearing transverse bending moment of the bottom plate, and the corrugated steel transverse bottom plate is arranged above the corrugated steel longitudinal bottom plate and is fixed with the corrugated steel longitudinal bottom plate together to form a corrugated steel bottom plate of the combined box girder; and pouring a concrete pavement layer above the corrugated steel longitudinal top plate by taking the corrugated steel longitudinal top plate as a bottom template, wherein the concrete pavement layer and the corrugated steel box girder are stressed together.
Description
Technical Field
The invention relates to a corrugated steel plate box girder, and belongs to the field of steel-concrete combined structures.
Background
The corrugated steel web beam is a novel steel-concrete combined structure with corrugated steel plates to replace concrete webs and adopting external prestressing, has the characteristics of high shearing strength and no resistance to longitudinal axial force, can reduce the dead weight of the box beam by replacing the concrete webs with the corrugated steel webs, avoids the defect that the concrete webs are easy to crack, and has high prestressing application efficiency, thereby being widely applied.
When the traditional corrugated steel web girder is constructed, a large number of templates and temporary supports are required to be erected on a pouring top plate and a bottom plate, the construction process is complex, and the section of the box girder cannot be independently carried before the concrete of the top plate and the bottom plate is coagulated and hardened, so that the construction of the next section can be carried out after the concrete of the top plate and the bottom plate of the previous section is cured when the section is constructed, and the construction process is slow; a special shearing-resistant connecting piece is required to be arranged between the traditional corrugated steel web beam top plate concrete and the corrugated steel web, and the structure and the design are complex.
Disclosure of Invention
Technical problems: the invention aims to provide a corrugated steel plate box girder, which is formed by splicing corrugated steel plates in the whole cross section, and is convenient to construct and simple in structure.
The technical scheme is as follows: the invention discloses a corrugated steel plate box girder, which structurally comprises a concrete pavement layer, a corrugated steel longitudinal top plate, a corrugated steel transverse top plate, a corrugated steel connecting plate, a corrugated steel web, a corrugated steel longitudinal bottom plate and a corrugated steel transverse bottom plate; the concrete pavement layer is formed by pouring a corrugated steel longitudinal roof as a bottom template; the wave-shaped steel transverse top plate is arranged below the wave-shaped steel longitudinal top plate and is fixed with the wave-shaped steel longitudinal top plate, and the wave shapes of the wave-shaped steel longitudinal top plate and the wave-shaped steel transverse top plate are mutually perpendicular to form the wave-shaped steel top plate of the box girder; the upper ends of the two corrugated steel webs placed in parallel are respectively and vertically connected with the corrugated steel longitudinal top plate through two corrugated steel connecting plates, the lower ends of the two corrugated steel webs placed in parallel are respectively and vertically connected with the corrugated steel longitudinal bottom plate through two corrugated steel connecting plates, the corrugated steel transverse bottom plate is arranged above the corrugated steel longitudinal bottom plate and is fixed with the corrugated steel longitudinal bottom plate, and the corrugated steel transverse bottom plate is mutually perpendicular to the corrugated steel of the steel longitudinal bottom plate to form the corrugated steel bottom plate of the box girder.
Wherein: the upper ends of the two corrugated steel webs placed in parallel are respectively and vertically connected with the corrugated steel longitudinal top plate through the two corrugated steel connecting plates, namely one ends of the two corrugated steel connecting plates are fixed with the corrugated steel longitudinal top plate and the corrugated steel transverse top plate through welding or bolts, the other ends of the two corrugated steel connecting plates are respectively and vertically connected with the upper ends of the two corrugated steel webs placed in parallel through welding or bolts, the corrugated steel webs are consistent with the corrugated direction of the corrugated steel longitudinal top plate, and the corrugated steel webs are vertical to the corrugated direction of the corrugated steel transverse top plate.
The length of the corrugated steel longitudinal top plate is longer than the distance between two corrugated steel webs which are arranged in parallel.
The lower ends of the two corrugated steel webs placed in parallel are respectively and vertically connected with the corrugated steel longitudinal bottom plate through two corrugated steel connecting plates, namely one end of each of the two corrugated steel connecting plates is fixed with the corrugated steel longitudinal bottom plate and the corrugated steel transverse bottom plate through welding or bolts, the other ends of the two corrugated steel connecting plates are respectively and vertically connected with the lower ends of the two corrugated steel webs placed in parallel through welding or bolts, the corrugated steel webs are consistent with the corrugated direction of the corrugated steel longitudinal bottom plate, and the corrugated steel webs are vertical to the corrugated direction of the corrugated steel transverse bottom plate.
The corrugated steel web plate, the corrugated steel connecting plate, the corrugated steel longitudinal top plate and the corrugated steel longitudinal bottom plate are corrugated steel plates of the same type.
The corrugated steel transverse top plate and the corrugated steel longitudinal top plate are made of corrugated steel plates of the same or different types.
The corrugated steel longitudinal bottom plate and the corrugated steel transverse bottom plate are made of corrugated steel plates of the same or different types.
The wave-shaped steel transverse top plate is arranged below the wave-shaped steel longitudinal top plate and is fixed with the wave-shaped steel longitudinal top plate, namely, the contact part of the wave-shaped steel transverse top plate and the wave-shaped steel longitudinal top plate is fixed together through bolts or welding.
The corrugated steel transverse bottom plate is arranged above the corrugated steel longitudinal bottom plate and is fixed with the corrugated steel longitudinal bottom plate, namely, the contact part of the corrugated steel transverse bottom plate and the corrugated steel longitudinal bottom plate is fixed with the corrugated steel longitudinal bottom plate through bolts or welding.
The contact part of the corrugated steel transverse top plate and the corrugated steel longitudinal top plate is the contact part of the trough section of the corrugated steel longitudinal top plate and the crest section of the corrugated steel transverse top plate.
The contact part of the waveform steel transverse bottom plate and the waveform steel longitudinal bottom plate is the contact part of the wave crest section of the waveform steel longitudinal bottom plate and the wave trough section of the waveform steel transverse bottom plate.
The beneficial effects are that: compared with the prior art, the invention has the following advantages:
1) The invention fully utilizes the characteristic of high unidirectional bending stiffness of the corrugated steel plate, and the longitudinal corrugated steel plate and the transverse corrugated steel plate are combined to be used as the corrugated steel top plate and the corrugated steel bottom plate of the box girder, so that the longitudinal and transverse bending resistance is better, and the consumption of steel can be reduced and the cost can be reduced under the condition of meeting the use condition.
2) The full section of the box girder can be quickly assembled, the assembled section of the box girder can be independently carried without additional temporary support, the corrugated steel longitudinal top plate is used as a template during construction, a concrete pavement layer can be poured along the full bridge at one time, and the construction is convenient and quick.
Drawings
FIG. 1 is a schematic view of a corrugated steel plate box girder structure of the present invention;
FIG. 2 is an exploded view of the wave form steel plate box girder structure of the present invention;
FIG. 3 is a schematic diagram of the connection structure of the upper end of the corrugated steel web plate and the corrugated steel connecting plate;
FIG. 4 is a schematic diagram of the connection structure of the corrugated steel connecting plate and the corrugated steel longitudinal roof plate of the invention;
FIG. 5 is a schematic diagram of the connecting structure of the corrugated steel transverse roof, the corrugated steel longitudinal roof and the corrugated steel connecting plate of the invention;
FIG. 6 is a schematic view of the connection structure of the lower end of the corrugated steel web plate and the corrugated steel connecting plate;
FIG. 7 is a schematic diagram of the connection structure of the corrugated steel connecting plate and the corrugated steel longitudinal bottom plate of the invention;
FIG. 8 is a schematic diagram of the connecting structure of the corrugated steel transverse bottom plate, the corrugated steel longitudinal bottom plate and the corrugated steel connecting plate of the invention;
the drawings are as follows: the concrete pavement layer 1, a corrugated steel longitudinal top plate 2, a corrugated steel transverse top plate 3, a corrugated steel connecting plate 4, a corrugated steel web 5, a corrugated steel transverse bottom plate 6, a corrugated steel longitudinal bottom plate 7, a short bolt 8 and a long bolt 9.
Detailed Description
Further description is provided below with reference to the drawings and examples.
A corrugated steel plate box girder (shown in figures 1 and 2) comprises a concrete pavement layer 1, a corrugated steel longitudinal top plate 2, a corrugated steel transverse top plate 3, a corrugated steel connecting plate 4, a corrugated steel web 5, a corrugated steel longitudinal bottom plate 7 and a corrugated steel transverse bottom plate 6; the concrete pavement layer 1 is formed by pouring a corrugated steel longitudinal roof 2 serving as a bottom template; the wave-shaped steel transverse top plate 3 is arranged below the wave-shaped steel longitudinal top plate 2 and is fixed with the wave-shaped steel longitudinal top plate 2 through bolts, and the wave-shaped steel longitudinal top plate 2 and the wave-shaped steel transverse top plate 3 are mutually perpendicular to form a wave-shaped steel top plate of the box girder; the upper ends of the two corrugated steel webs 5 which are placed in parallel are respectively and vertically connected with the corrugated steel longitudinal top plate 2 through two corrugated steel connecting plates 4, the lower ends of the two corrugated steel webs 5 which are placed in parallel are respectively and vertically connected with the corrugated steel longitudinal bottom plate 7 through two corrugated steel connecting plates 4, the corrugated steel transverse bottom plate 6 is arranged above the corrugated steel longitudinal bottom plate 7 and is fixed with the corrugated steel longitudinal bottom plate 7, and the corrugated steel transverse bottom plate 6 and the corrugated steel longitudinal bottom plate 7 are mutually vertical to form the corrugated steel bottom plate of the box girder.
As shown in fig. 3, 4 and 5, the upper ends of the two corrugated steel webs 5 placed in parallel are respectively and vertically connected with the corrugated steel longitudinal top plate 2 through two corrugated steel connecting plates 4, namely, one ends of the two corrugated steel connecting plates 4 are fixed with the corrugated steel longitudinal top plate 2 and the corrugated steel transverse top plate 3 through long bolts 9, the other ends of the two corrugated steel connecting plates 4 are respectively and vertically connected with the upper ends of the two corrugated steel webs 5 placed in parallel through short bolts 8, the corrugated directions of the corrugated steel webs 5 and the corrugated steel longitudinal top plate 2 are identical, and the corrugated steel webs 5 and the corrugated directions of the corrugated steel transverse top plate 3 are vertical.
The screw rod of the long bolt 9 protruding out of the corrugated steel longitudinal top plate 2 can be used as a shearing-resistant connecting piece between the corrugated steel longitudinal bottom plate 2 and the concrete pavement layer.
The length of the corrugated steel longitudinal roof plate 2 is longer than the distance between two corrugated steel webs 5 which are arranged in parallel.
As shown in fig. 6, 7 and 8, the lower ends of the two corrugated steel webs 5 placed in parallel are respectively and vertically connected with the corrugated steel longitudinal bottom plate 7 through two corrugated steel connecting plates 4, namely, one ends of the two corrugated steel connecting plates 4 are fixed with the corrugated steel longitudinal bottom plate 7 and the corrugated steel transverse bottom plate 6 through short bolts 8, the other ends of the two corrugated steel connecting plates 4 are respectively and vertically connected with the lower ends of the two corrugated steel webs 5 placed in parallel through short bolts 8, the corrugated directions of the corrugated steel webs 5 and the corrugated steel longitudinal bottom plate 7 are identical, and the corrugated directions of the corrugated steel webs 5 and the corrugated steel transverse bottom plate 6 are vertical.
The corrugated steel web 5, the corrugated steel connecting plate 4, the corrugated steel longitudinal top plate 2 and the corrugated steel longitudinal bottom plate 7 are corrugated steel plates of the same type.
The corrugated steel transverse top plate 3 and the corrugated steel longitudinal top plate 2 are made of corrugated steel plates of the same type;
the corrugated steel longitudinal bottom plate 7 and the corrugated steel transverse bottom plate 6 are made of corrugated steel plates of the same type.
The wave-shaped steel transverse top plate 3 is arranged below the wave-shaped steel longitudinal top plate 2, the wave shapes of the wave-shaped steel transverse top plate 3 and the wave-shaped steel longitudinal top plate are mutually perpendicular, the wave peak section of the wave-shaped steel transverse top plate 3 is clung to the wave trough section of the wave-shaped steel longitudinal top plate 4, and the wave peak section and the wave trough section are connected by adopting a long bolt 9; in the end area of the wave form steel transverse roof 3, the wave crest section of the wave form steel transverse roof 3, the wave trough section of the wave form steel longitudinal roof 2 and the wave trough section of the wave form steel connecting plate 4 are closely attached, and the wave crest section, the wave trough section and the wave trough section are connected through a long bolt 9.
The wave-shaped steel transverse bottom plate 6 is arranged above the wave-shaped steel longitudinal bottom plate 7, the wave shapes of the wave-shaped steel transverse bottom plate and the wave-shaped steel longitudinal bottom plate are mutually perpendicular, the wave trough section of the wave-shaped steel transverse bottom plate 8 is clung to the wave crest section of the wave-shaped steel longitudinal bottom plate 7, and the wave trough section and the wave crest section of the wave-shaped steel transverse bottom plate are connected by adopting a short bolt 8; in the end area of the wave-shaped steel transverse bottom plate 6, the wave trough section of the wave-shaped steel transverse bottom plate 6, the wave crest section of the wave-shaped steel longitudinal bottom plate 7 and the wave crest section of the wave-shaped steel connecting plate 4 are tightly attached, and the wave trough section, the wave crest section and the wave crest section are connected through a short bolt 8.
The corrugated steel longitudinal top plate 2 is mainly used for bearing transverse bending moment of the top plate and serving as a bottom template of the concrete pavement layer 1, the corrugated steel transverse top plate 3 is mainly used for bearing local longitudinal bending moment of the top plate and is matched with the corrugated steel transverse bottom plate 6 at the same time for bearing integral longitudinal bending moment of the section, and the stress requirements of the box girder structure can be met by selecting corrugated steel plates of different types.
The corrugated steel longitudinal bottom plate 7 is mainly used for bearing the transverse bending moment of the bottom plate, the corrugated steel transverse bottom plate 6 is mainly used for bearing the local longitudinal bending moment of the bottom plate, and is matched with the corrugated steel transverse top plate 3 at the same time, so that the corrugated steel longitudinal bottom plate is used for bearing the whole longitudinal bending moment of the section, and the stress requirements of the box girder structure can be met by selecting corrugated steel plates of different types.
The foregoing is only a preferred embodiment of the invention, it being noted that: it will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the principles of the present invention, and such modifications and adaptations are intended to be comprehended within the scope of the invention.
Claims (6)
1. A wave form steel sheet case roof beam, its characterized in that: the box girder structure comprises a concrete pavement layer (1), a corrugated steel longitudinal top plate (2), a corrugated steel transverse top plate (3), a corrugated steel connecting plate (4), a corrugated steel web (5), a corrugated steel longitudinal bottom plate (7) and a corrugated steel transverse bottom plate (6); the concrete pavement layer (1) is formed by pouring a corrugated steel longitudinal roof (2) serving as a bottom template; the wave-shaped steel transverse top plate (3) is arranged below the wave-shaped steel longitudinal top plate (2) and is fixed with the wave-shaped steel longitudinal top plate (2), and the wave-shaped steel longitudinal top plate (2) and the wave shape of the wave-shaped steel transverse top plate (3) are mutually perpendicular to form the wave-shaped steel top plate of the box girder; the upper ends of the two corrugated steel webs (5) which are placed in parallel are respectively and vertically connected with the corrugated steel longitudinal top plate (2) through two corrugated steel connecting plates (4), the lower ends of the two corrugated steel webs (5) which are placed in parallel are respectively and vertically connected with the corrugated steel longitudinal bottom plate (7) through two corrugated steel connecting plates (4), the corrugated steel transverse bottom plate (6) is arranged above the corrugated steel longitudinal bottom plate (7) and is fixed with the corrugated steel longitudinal bottom plate (7), and the corrugated steel transverse bottom plates (6) are mutually perpendicular to the waveforms of the steel longitudinal bottom plate (7) to form the corrugated steel bottom plate of the box girder;
the upper ends of the two corrugated steel webs (5) which are arranged in parallel are respectively and vertically connected with the corrugated steel longitudinal top plate (2) through two corrugated steel connecting plates (4), namely one ends of the two corrugated steel connecting plates (4) are fixed with the corrugated steel longitudinal top plate (2) and the corrugated steel transverse top plate (3) through welding or bolts, the other ends of the two corrugated steel connecting plates (4) are respectively and vertically connected with the upper ends of the two corrugated steel webs (5) which are arranged in parallel through welding or bolts, the corrugated steel webs (5) are consistent with the corrugated direction of the corrugated steel longitudinal top plate (2), and the corrugated steel webs (5) are vertical to the corrugated direction of the corrugated steel transverse top plate (3);
the lower ends of the two corrugated steel webs (5) which are placed in parallel are respectively and vertically connected with the corrugated steel longitudinal bottom plate (7) through the two corrugated steel connecting plates (4), namely one end of the two corrugated steel connecting plates (4) is fixed with the corrugated steel longitudinal bottom plate (7) and the corrugated steel transverse bottom plate (6) through welding or bolts, the other ends of the two corrugated steel connecting plates (4) are respectively and vertically connected with the lower ends of the two corrugated steel webs (5) which are placed in parallel through welding or bolts, the corrugated steel webs (5) are consistent with the corrugated direction of the corrugated steel longitudinal bottom plate (7), and the corrugated steel webs (5) are vertical to the corrugated direction of the corrugated steel transverse bottom plate (6).
2. A corrugated steel plate girder as claimed in claim 1, wherein: the length of the corrugated steel longitudinal top plate (2) is longer than the distance between two corrugated steel webs (5) which are arranged in parallel.
3. A corrugated steel plate girder as claimed in claim 1, wherein: the corrugated steel web (5), the corrugated steel connecting plate (4), the corrugated steel longitudinal top plate (2) and the corrugated steel longitudinal bottom plate (7) are corrugated steel plates of the same type.
4. A corrugated steel plate girder as claimed in claim 1, wherein: the corrugated steel transverse top plate (3) and the corrugated steel longitudinal top plate (2) are made of corrugated steel plates of the same or different types; the corrugated steel longitudinal bottom plate (7) and the corrugated steel transverse bottom plate (6) are made of corrugated steel plates of the same or different types.
5. A corrugated steel plate girder as claimed in claim 1, wherein: the corrugated steel transverse top plate (3) is arranged below the corrugated steel longitudinal top plate (2) and is fixed with the corrugated steel longitudinal top plate (2), namely, the contact part of the corrugated steel transverse top plate (3) and the corrugated steel longitudinal top plate (2) is fixed together through bolts or welding.
6. A corrugated steel plate girder as claimed in claim 1, wherein: the corrugated steel transverse bottom plate (6) is arranged above the corrugated steel longitudinal bottom plate (7) and is fixed with the corrugated steel longitudinal bottom plate (7) together, namely, the contact part of the corrugated steel transverse bottom plate (6) and the corrugated steel longitudinal bottom plate (7) is fixed together through bolts or welding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711095939.0A CN107700339B (en) | 2017-11-09 | 2017-11-09 | Wave-shaped steel plate box girder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711095939.0A CN107700339B (en) | 2017-11-09 | 2017-11-09 | Wave-shaped steel plate box girder |
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| Publication Number | Publication Date |
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| CN107700339A CN107700339A (en) | 2018-02-16 |
| CN107700339B true CN107700339B (en) | 2023-07-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201711095939.0A Active CN107700339B (en) | 2017-11-09 | 2017-11-09 | Wave-shaped steel plate box girder |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108755463A (en) * | 2018-05-24 | 2018-11-06 | 内蒙古交通设计研究院有限责任公司 | A kind of steel corrugated plating arch bridges and culverts exterior sheathing suitable for steel reinforced concrete combination |
| CN114457682A (en) * | 2021-12-28 | 2022-05-10 | 黑龙江省龙建路桥第五工程有限公司 | Cast-in-place construction method of cast-in-place concrete bridge |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009079401A (en) * | 2007-09-26 | 2009-04-16 | Nippon Steel Engineering Co Ltd | Girder structure using corrugated steel plate web |
| CN101748682A (en) * | 2010-01-22 | 2010-06-23 | 清华大学 | Steel-concrete composite beam adopting corrugated steel web and construction method thereof |
| CN203373899U (en) * | 2013-07-18 | 2014-01-01 | 杭州博数土木工程技术有限公司 | Vertical and horizontal dual-corrugated sheet steel combined member |
| CN204919302U (en) * | 2015-08-27 | 2015-12-30 | 河南大建桥梁钢构股份有限公司 | Few main girder structure of wave form steel web |
-
2017
- 2017-11-09 CN CN201711095939.0A patent/CN107700339B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009079401A (en) * | 2007-09-26 | 2009-04-16 | Nippon Steel Engineering Co Ltd | Girder structure using corrugated steel plate web |
| CN101748682A (en) * | 2010-01-22 | 2010-06-23 | 清华大学 | Steel-concrete composite beam adopting corrugated steel web and construction method thereof |
| CN203373899U (en) * | 2013-07-18 | 2014-01-01 | 杭州博数土木工程技术有限公司 | Vertical and horizontal dual-corrugated sheet steel combined member |
| CN204919302U (en) * | 2015-08-27 | 2015-12-30 | 河南大建桥梁钢构股份有限公司 | Few main girder structure of wave form steel web |
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| CN107700339A (en) | 2018-02-16 |
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