Skyboat Kafe, Dek Observasi by Xin Yuan is a highly esteemed winner of the very prestigious 2022 A' Design Award Emas in Desain Arsitektur, Bangunan dan Struktur Competition Category.

EmasArsitektur· 2022

Skyboat Kafe, Dek Observasi

by Xin Yuan

Client: XinY structural consultants

A' Design Award Emas Winner in Arsitektur Category

32,295

Verified Award Winner

Verify Award Status for #137741

Visit Site View at A' Design Award Press Release Award Badge

Colors

The Design

About Skyboat Kafe, Dek Observasi

Skyboat adalah bangunan dua lantai yang berdiri di atas sinkhole (lubang runtuhan) sedalam 613 meter di Leye, Tiongkok. Kamar-kamar hotel ditempatkan di lantai dasar, kafe di lantai satu, dan platform pandang di atap. Platform tersebut dilengkapi lantai kaca yang dapat dipijak dengan ukuran 10 x 12,5 meter. Bangunan ini membentang di atas lorong sempit pada bagian atas sinkhole dan menjorok secara kantilever sepanjang 34 meter dan 22 meter ke masing-masing sisi punggung gunung. Titik pusat gravitasi yang rendah memungkinkan struktur ini menyeimbangkan dirinya sendiri. Hanya lima tumpuan yang digunakan, sehingga kerusakan terhadap tumbuhan setempat dapat diminimalkan.

The Recognition

About the A' Design Award Emas

Skyboat Kafe, Dek Observasi adalah pemenang A' Design Award Emas, pengakuan yang sangat bergengsi yang diberikan kepada desain kelas satu, menakjubkan, dan menonjol. Pemenang Emas adalah kreasi yang sangat inovatif, visioner, dan berkilau memukau yang mencerminkan kejeniusan, kebijaksanaan, dan kepiawaian para desainernya. Skyboat Kafe, Dek Observasi diharapkan menjadi penemuan yang sangat dipuji, perintis tren, dan monumental yang memberikan nilai tanpa preseden. Desain pemenang A' Design Award Emas ini adalah proyek yang spektakuler dan disegani yang sangat bermanfaat bagi dan memajukan batas-batas seni, sains, desain, dan teknologi. Skyboat Kafe, Dek Observasi menciptakan perasaan keinginan yang kuat, membangkitkan gairah, mendorong kreativitas, dan memukau kita.

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