the modern application of tokyo wood bracket system of ancient japanese architecture in yusuhara...

THE MODERN APPLICATION OF TOKYO

WOOD BRACKET SYSTEM OF

ANCIENT JAPANESE ARCHITECTURE IN

YUSUHARA WOODEN BRIDGE MUSEUM

Tokyo wood Bracket

• unique feature of Traditional Japanese architecture• essential support to the timber frame structure and eaves of traditional Japanese buildings • a combination system of weight bearing blocks (masu) and bracket arms (hijiki)• fitted together by joinery alone without glue or

fasteners

WHAT IS THE ORIGIN OF TOKYO BRACKET SYSTEM ?

• Originated from ancient China• Notable architectural component call Dou Gong (wood bracket).• earliest record of the use of Dou-Gong in Zhou Dynasty• widely used in the Spring and Autumn

Period • Reach its peak in Tang and Song

dynasty

• In Song Dynasty , form fully developed, style unified , size standardized• number of layers used depends on importance of the building• Also as a status symbol• After Song Dynasty , Dougong become more

ornamental• 6th century , introduction of Buddhism

influences Japanese architecture• large scale temple using complicated

techniques in wood• Japanese study architecture from Tang Dynasty

HOW DOES IT FUNCTION AS A STRUCTURAL SUPPORT FOR BUILDING ?

• Structural support for building• Support weight of horizontal beams that span the vertical columns by transferring the weight on horizontal beams over a larger area to the vertical columns. • To support roof’s weight• The further the eaves extend, the more complex

the tokyo be• highly resistant to earthquakes

WHAT IS THE CONSTRUCTION METHOD OF TOKYO BRACKET SYSTEM ?

• Wood is the main material • Multiple interlocking bracket sets

formed by placing block (Masu) on a column to provide base for the bow-shaped brackets (Hijiki) that support the beam or another bracket above it.

Yusuhara Wooden Bridge Museum

• Kengo Kuma & Associates• Located at Yusuhara, town in the Kochi prefecture, Japan• a covered gallery pedestrian bridge that connects a hotel

and a spa, which had previously been separated by a cliff and a road.

• also  as  accommodations, work   and exhibition  rooms

• 154-ft. span• an interlocking beams system developed.• Alternating arrangement of interwoven wooden beams

creates a construction which floats in the air, supported by a single central pillar.

• Long beams rest above shorter ones , whole structure tapers to a point at a slender central column

• Columns on end merge with background surrounding

• The bridge evokes the traditional construction method of tokyo wood bracket system employed in Japan

• By repeating this method persistently to the scale of a bridge, it creates

a new expression of architecture while having its authentic Asian appearance.

THANK YOU

References• Wiborg,RS.(2010).Chinese Dou Gong Brackets.1-3.Retrieved from

http://www.richardwiborg.com/Chinese_Dou_Gong_Brackets• Zhu,EC.,Chen,ZY.,Pan,JL.,Wang,LN.(2010).Finite Element Modelling Of The Structural Performance Of Dou Gong Brackets Of YingXian Wood Pagoda, June142,2.Retrieved from http://www.ewpa.com/Archive/2010/june/Paper_142.pdf• (2013).Dougong.[website] Retrieved from http://en.wikipedia.org/wiki/Dougong• (2013).Japanese Architecture.[website] Retrieved from

http://en.wikipedia.org/wiki/Japanese_architecture• (2013).Tokyō.[website] Retrieved from http://en.wikipedia.org/wiki/Toky%C5%8D• S,Lei.,Y,Guang.,Thetford,A.,Obregon,A.(2012). Yusuhara Wooden Bridge

Museum.[website] Retrieved from http://faculty.arch.tamu.edu/anichols/index_files/courses/arch631/case/2012/YusuharaMuseum.pdf

• Kuma,K.,Carder,N.,Derkowski,K.,Pabila,J.(2012). Yusuhara Wooden Bridge Museum-Red cedar bridge links traditional and contemporary expressions of Asian architecture,Summer2012,23-24.Retrieved from http://wooddesign.dgtlpub.com/2012/2012-08 31/pdf/Yusuhara_Wooden_Bridge_Museum.pdf

Image Resources• http://img5.blogs.yahoo.co.jp/ybi/1/8f/21/cdblstb/folder/1573356/

img_1573356_37876884_0?1214745578• http://www.gjzw.net/Images/UpFile/2010424223130535.jpg• http://file21.mafengwo.net/M00/29/89/wKgB3FD2HX-AIN8LAArV-

WCBw2s31.groupinfo.w600.jpeg• http://images.china.cn/attachement/jpg/

site1000/20080325/000bcdb95f17095311065c.jpg• http://media-cdn.tripadvisor.com/media/daodao/photo-s/03/60/58/5a/caption.jpg• http://www.nipic.com/show/1/48/b7fd2454e9d1b590.html• http://www4.ocn.ne.jp/~kiyomin2/tokyou.html• http://arts.cultural-china.com/en/83Arts12591.html• http://www.gooood.hk/_d273332980.htm