file: sut3-pt.doc; dt. 2008-07-04
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Juhani VIROLA, Eur Ing-FEANI
Helsinki, Finland
The Sutong Bridge
– new world record cable-stayed bridge in China
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Sumário em português:
Na China, existem duas pontes de tirantes, sendo que cada uma destas irá exceder 1 Km de vão:
a Ponte Sutong (vão de 1088 m; ano 2008) e a Ponte Stonecutters (1018 m; 2009).
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Ingress:
In China, there are the world’s only two cable-stayed
bridges exceeding the 1 km span limit. Of these the Sutong
Bridge has a main span of 1088 m, and the Stonecutters
Bridge 1018 m.
In Jiangsu province, China, construction of approaches of a great
bridge was commenced in 2003. The bridge was built across the
Changjiang River, a tributary of the Yangtze River, some 100 km
upstream of Shanghai. The bridge links Suzhou and Nantong towns,
whence comes its name the Sutong Bridge, Ref. [1].
Of its type the Sutong Bridge is a 3-span continuous cable-stayed
bridge, with a steel deck and two concrete towers (Fig.1). The main
span of the bridge is 1088 m, and the both side spans are 500 m (300
m + 2 x 100 m), the overall length of the bridge being 8146 m
including viaducts. The deck of the cable-stayed bridge consists of a
streamlined orthotropic steel box girder, width 41,0 m, depth 4,0 m,
accommodating 4 + 4 traffic lanes. The vertical clearance at main
span is 62 m above water level. The concrete towers are 306 m tall
above water level, tallest bridge towers in the world, and their
shape resembles inverted-Y or narrow-A.
The Client was Sutong Bridge Construction Commanding Department. The
Consultant was Jiangsu Provincial Communications Planning & Design
Institute, and the Contractor was China Harbour Engineering Bureau
(SNEB) of China Harbour Engineering Group. Aerodynamic design and
wind tunnel tests were made by Tongji University, Shanghai. The cost
of the project was about 380 mill. dollars (USD). The bridge was
opened to traffic in July 2008, when it will became the longest-span
(1088 m) cable-stayed bridge in the world.
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Another long-span cable-stayed bridge in China is to be mentioned,
too. It is the Stonecutters Bridge in Hong Kong (1018 m; 2009), the
only other cable-stayed bridge in the world exceeding the 1 km span
limit, (Fig.2), [2]. As appears from the attached Table, the majority
of the world's leading 10 long-span cable-stayed bridges are situated
in China.
During 1999-2008, the world record cable-stayed bridge was the Tatara
Bridge in Japan, span 890 m [3], and during 1995-1999 Pont de
Normandie in France (856 m) [4]. Comprehensive tables of the world's
long-span bridges by types are given in Ref. [5].
References:
[1] DING Hanshan, Juhani VIROLA & DING Dajun: "The Suzhou-Nantong
Bridge - worldwide longest-span cable-stayed bridge".
Rakennusinsinööri ja -arkkitehti RIA 2006:3, p. 49-54.
[2] Iain MASTERTON: "Harbour heights". Bridge Design & Engineering
2007:1, p. 28-32.
[3] Juhani VIROLA: "The Tatara Bridge - World's leading cable-stayed
bridge". Rakennusinsinööri ja -arkkitehti RIA 1999:2, p. 22-26.
[4] Michel VIRLOGEUX: "The Normandie Bridge, France. A new record for
cable-stayed bridges". Structural Engineering International SEI
1994:1, p. 208-213.
[5] Bridge tables of the Helsinki University of Technology(TKK),
www.tkk.fi/Units/Bridge/longspan.html
THE LEADING 10 LONG-SPAN CABLE-STAYED BRIDGES IN THE WORLD
No. Bridge
1
2
3
4
5
6
7
8
9
10
Sutong
Stonecutters
Tatara
Pont de Normandie
Incheon-2
Chongming
Nanjing-3
Nanjing-2
Jintang
Baishazhou
Span
1088
1018
890
856
800
730
648
628
620
618
m
m
m
m
m
m
m
m
m
m
Location
Suzhou-Nantong, China
Hong Kong, China
Onomichi-Imabari, Japan
Le Havre, France
Incheon-Songdo, Korea
Shanghai, China
Nanjing, China
Nanjing, China
Zhoushan, China
Wuhan, China
2
Year
2008
2009
1999
1995
2009
2010
2005
2001
2008
2000
Fig.1: The Sutong Bridge, span 1088 m, new world record bridge.
PHOTO: JIANGSU PROVINCIAL GOVERNMENT
Fig.2: The Stonecutters Bridge, span 1018 m.
PHOTO: DISSING + WEITLING ARCHITETS
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