本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯
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5 \3 _( g1 M4 M5.39.217.77:8898If you are not a Physics person, read on and learn a fact of physics.
$ }: `2 i$ N- stvb now,tvbnow,bttvbAMAZING! 5.39.217.77:8898) M! T2 w( k I2 K
. j+ r, }( g9 z( P公仔箱論壇Even after you see it, it is still hard to believe!
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6 ]7 s1 W6 ^9 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。Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering! tvb now,tvbnow,bttvb" v# a! U( d$ L' s/ \- Y, N7 L
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project. 公仔箱論壇5 C5 `: Z% a) N& F4 I; b F) J
It is located in the city of Magdeburg, near Berlin.
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The photo was taken on the day of inauguration.tvb now,tvbnow,bttvb0 V' I$ X1 e4 Z4 s) s |% q
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.
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2 n6 {8 P: X$ P% f& x5.39.217.77:8898Question:; b6 y& ]1 B) l/ h- R
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Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,tvb now,tvbnow,bttvb% Q. h& l* R* |( q s( y& B0 Q( w$ |
Or just the weight of the water? % w6 s. J6 p* d. y, |, H4 H
8 v$ _: k0 @, ^3 Y- R: p# Ytvb now,tvbnow,bttvbAnswer:% D9 @& o4 r. L, G' m; p2 W) h
2 r9 k) l+ { X$ DTVBNOW 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 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 R6 N3 v# E& y; m; S9 ]
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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; n% w; e4 k% h r) }tvb now,tvbnow,bttvbThe Incredible Magdeburg Water Bridge in Germany
3 O( g. A1 q( `$ OThe 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.3 q8 z: f5 C4 x# c
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 o* x% p! c) {& Y: e
9 u. W+ S, \4 e2 [& b2 v6 B' EConstruction 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. # W; s: x2 o* u. Q1 K
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4 C) ]" `& g$ b8 Y公仔箱論壇
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