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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 tvb now,tvbnow,bttvb5 W' d$ y/ a2 c. Q+ N! r: ~

- `+ u. A! ^. m8 _公仔箱論壇If you are not a Physics person, read on and learn a fact of physics.   
" J0 P! o- s% x9 a! D! S' E+ Y  }AMAZING!
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Even after you see it, it is still hard to believe!

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( v, d2 E% m; K+ Y$ h) W0 g6 Utvb now,tvbnow,bttvbMagdeburg Water Bridge in Germany  
What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering!
% c, K  ]" }9 B5 g4 W8 S  aThis is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project.
# O3 ^5 Q1 ]2 D+ I3 e: C- {* N. PTVBNOW 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。It is located in the city of Magdeburg, near Berlin.
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) @  `& {. |  j+ U: F) RThe 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。" s. s* v# e! [* J% N( s+ q& R
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.* f! E) E5 n% v& s4 T

+ y1 T2 F) n7 f" v* k+ W4 @tvb now,tvbnow,bttvbQuestion:
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! a; ]. u7 V7 o( H2 i5 iDid that bridge have to be designed to withstand the additional weight of ship and barge traffic,5.39.217.77:8898% D8 L/ |0 r+ Z5 X) Z
Or just the weight of the water?
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  {" N& L4 \2 D+ S: [+ X& U; B4 {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。Answer:
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It only needs to be designed to withstand 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。9 Y5 x/ l) A6 g, ~
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 GermanyTVBNOW 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。) p2 G) m" R4 J8 e) K( \9 K
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.tvb now,tvbnow,bttvb# c" @1 P4 a) {( d7 O$ I
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.   P5 O, }0 E' _/ z4 }
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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公仔箱論壇: q6 A. }3 l+ @0 R  Q3 B. c
連通兩條水道的最初構思,而羅騰湖 Rothensee 升船機及大橋錨碇
; Q8 H4 y% k  K: ]# S: V" v4 v5 s也於 1938 年安裝就位,但在二次大戰期間,建設工程被推遲。
; Y- X1 b+ g8 h+ Y* d; R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。
( I, R8 g; |4 Q9 p' `6 t公仔箱論壇德國重新統一後,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。
- G* Q# {0 L" d9 w5.39.217.77:8898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tvb now,tvbnow,bttvb3 c# d( g- ?7 }* m+ q4 M6 u0 o! M2 I
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。
% E+ S5 ?+ v6 r! I& [5 P* C5 d8 ]5.39.217.77:88982003 年正式通航,水橋全長 918 公尺。 而 2003 年之前,在米德蘭運河和公仔箱論壇* c( s  c/ A( P* }; T! R2 k& n+ c
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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