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EVER SEEN A RIVER OVER A RIVER?

本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯
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If you are not a Physics person, read on and learn a fact of physics.   
. A  p2 O8 e5 L$ xtvb now,tvbnow,bttvbAMAZING!

# t) S- {0 m6 a$ H4 A# yTVBNOW 含有熱門話題,最新最快電視,軟體,遊戲,電影,動漫及日常生活及興趣交流等資訊。# N% i$ v# I5 Z: l& F
Even after you see it, it is still hard to believe!
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Magdeburg Water Bridge in Germany  
What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering! tvb now,tvbnow,bttvb( ?2 w0 M8 a( v' D2 ]1 q+ t
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project.
0 H( L1 ^" |5 M- Z" u. P2 R5.39.217.76It is located in the city of Magdeburg, near Berlin.
TVBNOW 含有熱門話題,最新最快電視,軟體,遊戲,電影,動漫及日常生活及興趣交流等資訊。+ M) b. ]8 S% a# k' z

2 s* e, X7 J9 ]  O  I0 }The photo was taken on the day of inauguration.- H# L+ Y- g/ l7 O  {: T( K& r3 f
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.3 V$ T8 m. T0 c$ y+ s, K5 X7 `5 |
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Question:

+ U3 H; Y% u* z% K! o* m, l) nTVBNOW 含有熱門話題,最新最快電視,軟體,遊戲,電影,動漫及日常生活及興趣交流等資訊。
! R# K2 y' [- ]7 bDid that bridge have to be designed to withstand the additional weight of ship and barge traffic,tvb now,tvbnow,bttvb* ~1 {$ M: z. A; x
Or just the weight of the water?
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Answer:

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It only needs to be designed to withstand the weight of  the water!
6 [+ }  t/ G0 o0 x! CTVBNOW 含有熱門話題,最新最快電視,軟體,遊戲,電影,動漫及日常生活及興趣交流等資訊。Why? A ship always displaces an amount of water that weighs the same as the ship, regardless of how heavily a ship may be loaded
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The Incredible Magdeburg Water Bridge in Germany: n5 V8 C2 ?" R7 `
The Magdeburg Water Bridge is a navigable aqueduct in Germany that connects the Elbe-Havel Canal to the Mittelland Canal and allows ships to cross over the Elbe River. At 918 meters, it is the longest navigable aqueduct in the world.7 i# }. e9 E# y
The Elbe-Havel and Mittelland canals had previously met near Magdeburg but on opposite sides of the Elbe Ships moving between the two had to make a 12-kilometer detour, descending from the Mittelland Canal through the Rothensee boat lift into the Elbe, then sailing downstream on the river, before entering the Elbe-Havel Canal through Niegripp lock. Low water levels in the Elbe often prevented fully laden canal barges from making this crossing, requiring time-consuming off-loading of cargo.
9 B' c& M' n9 y9 x& z3 h' ]5.39.217.76
+ Q: l5 Q! {& TTVBNOW 含有熱門話題,最新最快電視,軟體,遊戲,電影,動漫及日常生活及興趣交流等資訊。Construction of the water link was started as early as in the 1930s but due to the World War 2 and subsequent division of Germany the work remained suspended till 1997. The aqueduct was finally completed and opened to the public in 2003.

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平壤核子能源研究所
這宏偉壯觀、傲視寰宇的工程傑作早在 1919 年工程師們即已提出
8 j- l# b) G! G) P3 w# L連通兩條水道的最初構思,而羅騰湖 Rothensee 升船機及大橋錨碇
8 T5 D# W8 k: n6 ?$ G2 _1 Ztvb now,tvbnow,bttvb也於 1938 年安裝就位,但在二次大戰期間,建設工程被推遲。
9 N& f$ T! n$ a$ H7 }TVBNOW 含有熱門話題,最新最快電視,軟體,遊戲,電影,動漫及日常生活及興趣交流等資訊。隨後的冷戰時期,德國分裂,該專案被東德政府無限期地擱置下來。9 n: U8 ^" O8 X3 l- i8 Y2 L
德國重新統一後,隨著道路交通重大工程規劃的編制,水橋再次成為一個優先專案。! @' \# q  C2 v' f! y
於1997年開始建造,經過 6 年,耗資 5 億歐元,2.4 萬噸鋼材和 6.8 萬
* _  i; l' `9 v立方公尺混凝土,完成了巨大的水橋,連接柏林的內陸港與萊茵河沿岸港口。 - F) s9 R9 p  y- _
2003 年正式通航,水橋全長 918 公尺。 而 2003 年之前,在米德蘭運河和
3 D( v; ^$ Y% B$ B公仔箱論壇易北河-哈威爾運河之間運行的船舶不得不繞道 12 公里通過。
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  • k23bb

多谢您的分享!
first time heard & saw it, thanks for sharing, thanks tvboxnow!!
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