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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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. e, T0 e" f' k& i# q$ r7 ]4 E4 z公仔箱論壇If you are not a Physics person, read on and learn a fact of physics.   5.39.217.76( A1 I: \9 d7 Q$ e
AMAZING!
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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!
. y9 s! B" {" \% L% ~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。This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project.
+ g* u4 m4 l3 g5.39.217.76It is located in the city of Magdeburg, near Berlin.
5.39.217.76  D& j* L: A9 L
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The photo was taken on the day of inauguration.tvb now,tvbnow,bttvb; T0 Y& L  p, d; J% H8 F$ O
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.8 u6 _+ }: ]* o! y

* O6 x2 u. F! q3 k& sTVBNOW 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。Question:

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$ F; I) Y# t4 O+ Q: R( N# y9 b$ }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。Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,公仔箱論壇+ J9 z2 l7 J- {: @. I3 u7 D
Or just the weight of the water? 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。8 q/ v8 \; r) O. l; N9 M
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Answer:

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6 t: Q: f1 H; Ktvb now,tvbnow,bttvbIt only needs to be designed to withstand the weight of  the water!
$ I4 k3 @2 Z- Z公仔箱論壇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
% Q! D6 z) u. u& R2 Y# Y4 w5 etvb now,tvbnow,bttvbThe 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.
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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.
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5 g* w4 j4 {: K; _2 r8 S* d5.39.217.76Construction 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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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。. E& `0 u. F  ~& A% i
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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* Z! U6 N1 p( _( g/ I
連通兩條水道的最初構思,而羅騰湖 Rothensee 升船機及大橋錨碇# I1 E* p6 I, p5 t: h" L! I
也於 1938 年安裝就位,但在二次大戰期間,建設工程被推遲。/ x  K, `: u) J
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。tvb now,tvbnow,bttvb9 j& O' {( `( R9 G- C) c
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。
% |$ I& N2 D" c8 H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" e( C1 b2 Q' i! r! Q4 r
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。 2 B& b  Z9 F. H9 a; ]& P* k# q
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
: X0 E, ]- S1 T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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