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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
0 [8 {3 B% o  i* @/ ]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。
$ }: ^/ p8 v$ ]If you are not a Physics person, read on and learn a fact of physics.   
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5 m2 L* O- M: Gtvb now,tvbnow,bttvbEven after you see it, it is still hard to believe!

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+ s. d  Q- d- k0 V2 m, o8 {. k6 UTVBNOW 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。Magdeburg Water Bridge in Germany  
What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering! 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。) ]' i1 {8 _5 z2 G+ |
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project.
5 }9 h# S( R  M: D% z; N1 |7 IIt is located in the city of Magdeburg, near Berlin.
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9 k5 }8 [# N& f: c0 ]tvb now,tvbnow,bttvbThe photo was taken on the day of inauguration.
8 p  l" ~6 o. J: [0 q7 O# Ytvb now,tvbnow,bttvbTo those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.
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Question:

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8 C/ Y( L8 ]0 G0 x' D) ]# |公仔箱論壇Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,
$ {" o9 `: O( D* F+ d- R% c7 k" bOr just the weight of the water?
) |  H0 z# o" @. 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。
5 f5 l& N7 [9 m8 htvb now,tvbnow,bttvbAnswer:

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It only needs to be designed to withstand the weight of  the water!
0 _( e* b6 {3 O& Y; j' 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 Germany5.39.217.76: g7 b* q2 s& b* D- G
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.
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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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  u4 t6 X6 b- ~; QConstruction 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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2 f% X: o7 C2 }& R  M4 ~, 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。
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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tvb now,tvbnow,bttvb, C; A: m, D4 K2 [
連通兩條水道的最初構思,而羅騰湖 Rothensee 升船機及大橋錨碇
7 J) k+ w% D+ i! y& f1 ^1 V. L  p# m也於 1938 年安裝就位,但在二次大戰期間,建設工程被推遲。
. V; X% `- d- {& n/ C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。tvb now,tvbnow,bttvb& w5 |& |2 Q% m& R1 `4 E3 e
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。
& x8 j$ `: D9 t$ g) Q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
& _; o( w5 B: o' Y- U0 L0 V3 R0 G1 S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。 tvb now,tvbnow,bttvb' t4 S; n. C4 ?! {' B$ A
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
$ y# w: K/ @2 Z* Q' U8 ^: ^1 a* ^5.39.217.76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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