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Skyboat Café, udsigtsplatform by Xin Yuan

Skyboat Café, udsigtsplatform by Xin Yuan is a highly esteemed winner of the very prestigious 2022 A' Design Award i Guld in Arkitektur-, Bygnings- og Konstruktionsdesign Competition Category.


GuldArkitektur· 2022

Skyboat Café, udsigtsplatform

by Xin Yuan

Client: XinY structural consultants

A' Design Award i Guld Winner in Arkitektur Category

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The Design

About Skyboat Café, udsigtsplatform

Skyboat er en toetagers bygning placeret over et 613 meter dybt jordfaldshul i Leye, Kina. Hotelværelser er placeret i stueetagen, en café på første sal og en udsigtsplatform på taget. Platformen omfatter et gangbart glasgulv på 10 gange 12,5 meter. Bygningen spænder over den smalle passage øverst i jordfaldshullet og rager 34 meter og 22 meter ud til hver side af bjergryggen. Et lavt tyngdepunkt gør det muligt for konstruktionen at balancere sig selv. Der anvendes kun fem understøtninger, hvilket begrænser skaderne på de lokale planter.

The Recognition

About the A' Design Award i Guld

Skyboat Café, udsigtsplatform er vinder af A' Design Award i Guld, en uhyre prestigefyldt anerkendelse, der tildeles førsteklasses, vidunderlige og fremragende designs. Guldvinderne er yderst innovative, højt visionære og glamourøst blændende skabelser, der afspejler deres designeres geni, visdom og dygtighed. Skyboat Café, udsigtsplatform forventes at være en højt rost, trendsættende og monumental opfindelse, der leverer hidtil uset værdi. Dette design, der har vundet A' Design Award i Guld, er et spektakulært, respekteret projekt, som i høj grad gavner og flytter grænserne for kunst, videnskab, design og teknologi. Skyboat Café, udsigtsplatform skaber intense følelser af begær, vækker passion, opmuntrer kreativitet og fascinerer os.

Behind the Design

Press Kit

Credits, team members and technical details provided by the designer.

Unique Properties
The structure cantilevers 36m over the 613m deep sinkhole. The top of the sinkhole is extremely narrow which can only accommodate a small passageway. Skyboat is proposed to span over the passageway and cantilever out to each side of the mountain ridge. Similar to the tumbler toys, it is proposed to lower the structure centre of gravity and utilize the minimum area (10metres by 30metres), in which way, the self-balance of the structure is therefore achieved.
Dimensions & Packaging
two-storey building consisting of hotel rooms at the ground floor, a café at the first floor and a roof viewing platform which contains a 10metre-by-12.5metre walk-on glass floor. The building comprises a construction area of 495m2 and covers a plan dimension of 10metres by 80metres. Both ends of the building cantilevers out by 34metres and 22metres respectively. The total steel weight used is 438 tonne.
Tags
Skyboat, XinY, Glass floor, Cantilever, Leye, Dashiwei
Production Technology
There are only five supports proposed. This minimizes the damages to the local vegetation.

To protect the local plants and rivers, hanging falsework was used during the construction stage and to have the structural members installed by pieces.
Design Challenge
The structure cantilevers 36m over the 613m deep sinkhole. The top of the sinkhole(the site)is extremely narrow which can only accommodate a small passageway.
A long crack at the site indicates the site is not stable. Apart from grouting the existing crack, it is also proposed to have the key struts at each ends of the building inclining towards the ridge, the horizontal component forces from which then provided the embracing forces to the ridge and hence improved the stability of the site.
Research
The structural system and component arrangements were adapted to the force distribution, perfectly aligned with the elegant architectural geometry.
By increasing the key strut lengths, the pre-cambering of the front cantilever structure is then achieved, which can compensate the deflections under the dead loads and some of the live loads. This also protects the glazings from large deformations.
Inspiration
A big goose, a e tumbler toy.

The long crack at the top of the ridge indicates the site is not stable. Apart from grouting the existing crack, it is also proposed to have the key struts at each ends of the building inclining towards the ridge, the horizontal component forces from which then provided the embracing forces to the ridge and hence improved the stability of the site.
Project Duration
The project started on 2018 in Leye China and finished on 2019.
Operation Flow
Visitors can enjoy coffee in the beauty of nature, or they can walk on the glass floor above the 600-meter deep pit to experience the shock of their heartbeats.
Team Members
Structural Engineers:XinY & Yuanlizhu
Client:Guangxi Leye DashiWei
Architect:Zhong Huaying Studio
Codesign:LiLi & Shanghai ZhongJian Architectural Design
Principal Contractor:China Railway 25th Group 6th Company
Image Credits
Image#1: Photographer Li Jin, Yongheng,2019.
Image#2: Photographer Yongheng, Yongheng,2019.
Image#3: Photographer Yongheng, Yongheng,2019.
Image#4: Photographer Xin Yuan, XinY,2019.
Image#5: Photographer Yongheng, Yongheng,2019.
Video Credits: Yongheng

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