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Old October 12th, 2006, 07:48 AM   #61
Sinjin P.
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What's the name of China's longest suspension bridge again?
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Old October 15th, 2006, 05:13 AM   #62
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Nanjing Dashengguan Yangtse River bridge is u/c, it has 6 rail tracks in total. 2 tracks of 300km/h for Beijing-Shang high-speed rail, 2 tracks of 200km/h for Shanghai-Chengdu rail, and 2 tracks of 80km/h for city metro. It's 9.3km long in total, 1615m over the river. It has 2x336m double main span. longest of its kind in the world. It will be built by 2010.



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Old October 15th, 2006, 09:08 AM   #63
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Anyone have pics of the bridges in Wuhan? After all, it's the only city (?) that lies on both sides of the Yangtze!
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Old October 15th, 2006, 11:42 AM   #64
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Quote:
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Anyone have pics of the bridges in Wuhan? After all, it's the only city (?) that lies on both sides of the Yangtze!
wuhan yangtze river bridge (built in 1957)













wuhan No 2 yangtze river bridge (built in 1991)










wuhan baishazhou yangtze river bridge (built in 1997)










wuhan junshan yangtze river bridge (built in 1998)












wuhan yanluo yangtze river bridge (u/c)








wuhan tianxinzhou yangtze river bridge (u/c)







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Old October 21st, 2006, 02:41 AM   #65
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Amazing. I believe that the chinese have many of the greatest building and infrastructure projects being planned and built. I cannot wait to see what else they have planned.
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Old October 21st, 2006, 11:45 PM   #66
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Thank you very much, VVVV, I've been searching for info about Wuhan's bridges for a long time. Do you have more pictures? I think there are 8 bridges built+planned in total:

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Old October 25th, 2006, 02:41 PM   #67
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Quote:
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No other nation competes with these bridges, and of this quantity!
It's all European and American technology and design. The Chinese did not invent a thing.
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Old October 25th, 2006, 02:53 PM   #68
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Zhaozhou Bridge,we bulit it 1400 years ago,do you have something earlier to show?

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Old October 25th, 2006, 04:01 PM   #69
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Quote:
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Zhaozhou Bridge,we bulit it 1400 years ago,do you have something earlier to show?
Tons of. The Romans had already been building stone arch bridges for hundreds of years, when the Chinese were still looking for the nearest ford. Even today, there are several dozens extant Roman stone bridges around, the oldest dating from the 2nd century BC.

But we are talking here about modern steel and concrete constructions which came up no earlier than the 19th and 20th century in Europe and the USA. All these Chinese bridges are direct copies from that development line.

Hence, the nationalistic thread title should better read: CHINA - NATION of MEGA Copies!

And to adequately reflect the fact that the PRC is perhaps the greatest copyright violator of all time: CHINA - NATION of MEGA Copyright Violations!

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Old October 25th, 2006, 06:04 PM   #70
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why r u so jealous? they are just bridges.
besides, what the title said is the fact.
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Old October 26th, 2006, 03:15 AM   #71
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Tons of. The Romans had already been building stone arch bridges for hundreds of years, when the Chinese were still looking for the nearest ford. Even today, there are several dozens extant Roman stone bridges around, the oldest dating from the 2nd century BC.

But we are talking here about modern steel and concrete constructions which came up no earlier than the 19th and 20th century in Europe and the USA. All these Chinese bridges are direct copies from that development line.

Hence, the nationalistic thread title should better read: CHINA - NATION of MEGA Copies!

And to adequately reflect the fact that the PRC is perhaps the greatest copyright violator of all time: CHINA - NATION of MEGA Copyright Violations!

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Welcome, loser! Don't only talk, show some evidence and hard data from unbiased sources. I can claim you are my bastard, but I have to give the evidence that I have actually slept with your mother.

Last edited by Hidden Dragon; October 26th, 2006 at 03:53 AM.
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Old October 26th, 2006, 03:55 AM   #72
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Source from wikipedia

http://en.wikipedia.org/wiki/Zhaozhou_Bridge

The Zhaozhou Bridge (Traditional Chinese: 趙州橋, Simplified Chinese: 赵州桥, pinyin: Zhozhōu Qio) is the world's oldest open-spandrel segmental arch bridge located in Hebei Province, China. It is also the oldest standing bridge in China.

The Zhaozhou Bridge is also known as the Safe Crossing Bridge (Traditional Chinese: 安濟橋, Simplified Chinese: 安济桥, pinyin: An Ji Qio) and the Great Stone Bridge (Chinese: 大石桥; pinyin: D Sh Qio). It crosses the Jiao River (Jiao He) in Zhao County, approximately 40 km southeast of the provincial capital Shijiazhuang. It is named for the nearby Zhao County (趙縣), which was formerly known as Zhaozhou (趙州). In total, the bridge is about 50 m long with a central span of about 37 m. It stands 7.3 m tall and has a width of 9 m.

The Zhaozhou Bridge is the earliest known segmental arch bridge in the world, its arch covers a circle segment less than a semicircle and has a rise-to-span ratio of approximately 1:5 (7.3 to 37 m). This is considerably smaller than the rise-to-span ratio of 1:2 of a semicircular arch bridge and subjects the abutments of the bridge to large forces.

The central arch is made of 28 thin, curved limestone slabs which are joined with iron dovetails. This allows the arch to adjust shifts in its supports, and prevents the bridge from collapsing even when a segment of the arch breaks. The bridge has two small side arches on either side of the main arch. These side arches serve two important functions: First, they reduce the total weight of the bridge by about 15.3% or approximately 700 tons, which is vital because of the low rise-to-span ratio and the large forces on the abutments it creates. Second, when the bridge is submerged during a flood, they allow water to pass through, thereby reducing the forces on the structure of the bridge.

The Zhaozhou Bridge was constructed in the years 595-605 during the Sui Dynasty. It is credited to a craftsman named Li Chun. Since it was build, it has withstood 10 floods, eight battles, and many earthquakes including a 7.2 degree earthquake in 1966. Yet, the support structure remains intact and the bridge is still in use. Only the ornamental railings have been replaced every few hundred years. The earliest segmental arch bridge in Europe is the Ponte Vecchio in Florence, it was built in 1345.

The intriguing design of the bridge has given rise to many legends. According to one legend, the bridge was build by a master architect named Lu Ban in a single night. In another story, the bridge was put to the test by two immortals who crossed it at the same time and Lu Ban saved it by wading into the water and supporting the structure.

Although the Zhaozhou Bridge has been mentioned in Ming Dynasty literature, it later fell into obscurity. When Professor Liang Sicheng (梁思成) of Tsing Hua University rediscovered the bridge on a field exploration of ancient architecture in Hebei province, made detailed measurements, and published a report and drawing ("An Chi Ch'iao the Great Stone Bridge Chao Hsien, Hobei, Sui Dynasty AD 569-617 , Li Chun Master Builder"), it became world famous.
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Old October 26th, 2006, 08:21 AM   #73
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Quote:
Originally Posted by null View Post
Zhaozhou Bridge,we bulit it 1400 years ago,do you have something earlier to show?

I am not to troll, but bridge Fabricio at Italy is from near 2100 years ago and it's on use

http://www.archinform.net/projekte/1...f7db336a0ec092
http://gallery.betaversion.org/main.php?g2_itemId=22107
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Old October 26th, 2006, 08:36 AM   #74
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I am not to troll, but bridge Fabricio at Italy is from near 2100 years ago and it's on use
The Zhaozhou Bridge is the world's oldest open-spandrel arch bridge, twice as big as The Ponte Dei Quattro Capi (Il ponte Fabricio)

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Old October 26th, 2006, 08:47 AM   #75
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but about 500 years older. All that was asked for was to find a stone bridge that was older, and one was found that is a half millenium older than the one presented.

Last edited by DonQui; October 26th, 2006 at 08:54 AM.
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Old October 26th, 2006, 03:22 PM   #76
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The Zhaozhou Bridge is the world's oldest open-spandrel arch bridge, twice as big as The Ponte Dei Quattro Capi (Il ponte Fabricio)
The Ponte Fabricio has itself an open spandrel, as you can see from any pic. Numerous Roman Bridges in fact have.

And the largest still extant Roman bridge at Merida, Spain is nearly 800m long, that is more than 16 times as long as the Zhaozhou.

That is not to say that the Trajan's Bridge across the Danube was even larger (1080 m) and had between its twenty pillars spans of 52 m - world record for over a thousand years.

And Caesar built during his Gallic War a wooden bridge across the Rhine in 10 days. That was in the 50s BC. The first permanent Chinese bridge across the Yellow River, on the other hand, dates from the early 20th century AD. A European steel construction by the way.
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Old October 26th, 2006, 03:24 PM   #77
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but about 500 years older. All that was asked for was to find a stone bridge that was older, and one was found that is a half millenium older than the one presented.
Exactly. And if the thread title would not have come across so nationalistic ("NATION" - "MEGA"), everything were fine with me.
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Old October 26th, 2006, 03:35 PM   #78
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^ How is that nationalistic? "Mega" is used often among these forums. And "Nation of" could as well be used to say "Land of..." I don't see why you should start generalizing about China and fanning a flamewar.

You come across as racist and your logic in calling China a nation of copies doesn't help to make your point. If I were to use the same logic, you should stop using gunpowder, paper, the printing press, compasses, etc because you're just copycats who think they're superior.
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Old October 26th, 2006, 05:02 PM   #79
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Of course China is the nation of Mega bridge right NOW! just look how many longest bridges in main span of the world are in China.

http://www.tkk.fi/Units/Departments/.../longspan.html

1. Suspension Bridges (span ≥ 1000 m)
No. Bridge Span [m] Location Country Year Notes

1 Akashi-Kaikyo 1991 Kobe-Naruto Japan 1998
2 Xihoumen 1650 Zhoushan Island China 2008
3 Great Belt East 1624 Korsor Denmark 1998
4 Runyang South 1490 Zhenjiang China 2005
5 Humber 1410 Kingston-upon-Hull UK 1981
6 Jiangyin 1385 Jiangsu China 1999
7 Tsing Ma 1377 Hong Kong China 1997

8 Verrazano-Narrows 1298 New York, NY USA 1964
9 Golden Gate 1280 San Francisco, CA USA 1937
10 Yangluo 1280 Wuhan China 2007
11 Hga Kusten 1210 Kramfors Sweden 1997
12 Mackinac 1158 Mackinaw City, MI USA 1957
13 Huangpu 1108 Guangzhou China 2008
14 Minami Bisan-seto 1100 Kojima-Sakaide Japan 1988
15 Fatih Sultan Mehmet 1090 Istanbul Turkey 1988
16 Balinghe 1088 Guanling China 2010 1)
17 Bosporus 1074 Istanbul Turkey 1973
18 George Washington 1067 New York, NY USA 1931
19 Kurushima-3 1030 Onomichi-Imabari Japan 1999
20 Kurushima-2 1020 Onomichi-Imabari Japan 1999
21 Ponte 25 de Abril 1013 Lisbon Portugal 1966
22 Forth Road 1006 Edinburgh UK 1964
1) Vertical clearance 375 m, highest in the world


2. Cable-Stayed Bridges (span ≥ 600 m)
No. Bridge Span [m] Location Country Year Notes

1 Sutong 1088 Suzhou-Nantong China 2009
2 Stonecutters 1018 Hong Kong China 2008

3 Tatara 890 Onomichi-Imabari Japan 1999
4 Pont de Normandie 856 Le Havre France 1995
5 Incheon-2 800 Incheon-Songdo South Korea 2009
6 Nanjing-3 648 Nanjing China 2005
7 Nanjing-2 628 Nanjing China 2001
8 Jintang 620 Zhoushan Island China 2008
9 Baishazhou 618 Wuhan China 2000
10 Qingzhou 605 Fuzhou China 2003
11 Yangpu 602 Shanghai China 1993




3. Steel Arch Bridges (span ≥ 380 m)
No. Bridge Span [m] Location Country Year Notes

1 Chaotianmen 552 Chongqing China 2008
2 Lupu 550 Shanghai China 2003

3 New River Gorge 518 Fayetteville,WV USA 1977
4 Bayonne 504 New York, NY USA 1931
5 Sydney Harbour 503 Sydney Australia 1932
6 Chenab 461 Katra India 2008
7 Wushan 460 Chongqing China 2005
8 Caiyuanba 420 Chongqing China 2005

9 Fremont 383 Portland, OR USA 1973
10 Numata River Gorge 380 Hiroshima Japan 2007


Updated 19.5.2006 Copyright Juhani Virola Maintained by LBE
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Old October 26th, 2006, 07:46 PM   #80
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waaauw china is booming
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