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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 5.39.217.76- }3 g  q& Y- B+ u

, i/ M5 `! P' C) 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。If you are not a Physics person, read on and learn a fact of physics.   3 A& A9 L7 }5 M6 J6 i( x, u8 `
AMAZING!

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7 G; B  ?- e6 |$ q) _8 u( ATVBNOW 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。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! 公仔箱論壇- p3 J1 c/ n& r; u
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project.
4 I( ^6 `* I) H% M* P% K) f% wtvb now,tvbnow,bttvbIt is located in the city of Magdeburg, near Berlin.

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0 Y3 g0 F9 K( u5 o- |- wThe photo was taken on the day of inauguration.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。/ [% }6 S* u3 b0 i/ M$ G
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.
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Question:

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3 V5 j5 d% Y" }Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,
! w# d6 h0 ?4 c8 }$ m: Atvb now,tvbnow,bttvbOr just the weight of the water? , v0 w3 }- _* |! p  v9 S

' L8 O  O$ N% H- H, w/ @" P" B5 M2 @Answer:

; F" T& L; l7 z1 w5 |公仔箱論壇% @  ?$ h5 |0 G$ Q
It only needs to be designed to withstand the weight of  the water!
+ A, J3 e# @& x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
: g; z$ j1 d" A' {0 Ltvb 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. 4 y  i+ W! M4 C& X4 w

3 J9 b5 {  q. N( wTVBNOW 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。* p7 }6 k6 N% N, l2 `9 P

/ F4 ^8 m6 I' d1 V5.39.217.76公仔箱論壇5 Q* Z4 [" q) m6 e- ^) T0 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
# _2 j$ v$ H: s4 e1 s公仔箱論壇連通兩條水道的最初構思,而羅騰湖 Rothensee 升船機及大橋錨碇
% ?3 n  }& d: p& a: t5.39.217.76也於 1938 年安裝就位,但在二次大戰期間,建設工程被推遲。
3 B% @7 {$ |0 N; [5 ?公仔箱論壇隨後的冷戰時期,德國分裂,該專案被東德政府無限期地擱置下來。
6 @9 _1 i, E* M* M5 W% R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。5.39.217.76* X! e- [; r$ Z$ n* G* ]# 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
) B" ?& `8 O4 \; H6 S+ M! N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。
) k6 V" b1 ~" G, T2003 年正式通航,水橋全長 918 公尺。 而 2003 年之前,在米德蘭運河和
1 e; ~1 |6 i, _* f6 G4 [$ W1 _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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多谢您的分享!
first time heard & saw it, thanks for sharing, thanks tvboxnow!!
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