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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 5.39.217.765 U/ l1 M. V8 E1 l3 k$ k  H4 m8 q: Q
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If you are not a Physics person, read on and learn a fact of physics.   公仔箱論壇3 B. [, b$ F! n( \: a1 M
AMAZING!
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tvb now,tvbnow,bttvb1 B! \, j) \4 ?2 o8 r7 P
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!
% r6 q; U; k% L3 @0 y4 }tvb now,tvbnow,bttvbThis is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project. 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。! N/ J2 Q, m# z+ ^, x4 E
It is located in the city of Magdeburg, near Berlin.
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The photo was taken on the day of inauguration.( ?0 K& s( J# R# i8 q
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.  Q4 O/ o5 U+ V4 V* _8 @: I
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Question:

  ]/ K6 F6 X( \  K7 Ltvb now,tvbnow,bttvb, D( C6 k6 v; @# A% S: k
Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,
, Q, a5 V5 Y/ o2 c; |4 B公仔箱論壇Or just the weight of the water?
6 S( h: p- T* M7 ~2 X. x; d3 c: G2 i5.39.217.76TVBNOW 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。4 I; O, n: g; h1 s4 s5 P0 |+ ]/ z7 R
Answer:

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  H: h! q9 T# `% l2 T) V公仔箱論壇It only needs to be designed to withstand the weight of  the water! & u/ y* W7 h' H- `4 r/ s, u! r* i
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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8 x" w3 @: K/ M) V; Z* d9 }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。
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The Incredible Magdeburg Water Bridge in Germany7 w7 W! Z9 G+ J5 |5 Q
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.公仔箱論壇3 |5 \  i* `* w9 ^
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. / E7 @9 l' g5 J/ G1 \9 P

9 T( [7 ?  @( B2 eTVBNOW 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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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。3 `8 O5 c# V7 ~2 d6 k
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0 N6 C9 A+ [3 X/ `0 ?2 BTVBNOW 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。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。: c. J$ s; _) ?8 l- k
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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
4 U$ W% p. z7 v& L% Vtvb now,tvbnow,bttvb連通兩條水道的最初構思,而羅騰湖 Rothensee 升船機及大橋錨碇% ~9 X# O7 t8 M' p7 c3 t; P
也於 1938 年安裝就位,但在二次大戰期間,建設工程被推遲。
/ X1 K: k, f( N. Y7 G! J6 H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。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。; n6 H) }4 H+ {$ c: a
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。0 _* M# K7 w% }  P
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! G8 B- `* n! e/ ]3 C
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。 0 |+ n9 L7 R) s
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
5 n" `, @- R* J; }% Gtvb now,tvbnow,bttvb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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