本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯
2 A3 k l4 ^$ _! O+ j$ GTVBNOW 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。* [$ x1 S" H4 e+ j$ ]$ m% s/ Y
If you are not a Physics person, read on and learn a fact of physics.
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6 _5 C! ~' Z4 Q' P- s8 a# f5 V- rtvb now,tvbnow,bttvbEven after you see it, it is still hard to believe!tvb now,tvbnow,bttvb' o( q8 a. y0 x) t
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( v! ] n' i6 s" c0 y5.39.217.76Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering!
0 h* O# y, ]6 y/ B1 f3 `: v公仔箱論壇This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project. 1 `+ Y8 F$ B- I# N2 ?0 B' x8 f
It is located in the city of Magdeburg, near Berlin.
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The photo was taken on the day of inauguration.5.39.217.76! \1 ]+ x% {( B( K
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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Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,
! [- \/ Y' W7 B3 b P/ Z* Q* {5.39.217.76Or just the weight of the water?
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! u! Z6 r) K2 w( \9 c: Y& o公仔箱論壇Answer:tvb now,tvbnow,bttvb6 J" x7 M5 k6 e
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。; L. j' V- L9 E* s
It only needs to be designed to withstand the weight of the water!
; S" @ N1 t& h6 ?. p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 loadedTVBNOW 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。; a; a4 p9 u5 O( b" V
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" T# F B' x8 j& {公仔箱論壇The Incredible Magdeburg Water Bridge in Germany5.39.217.768 E2 p7 U. T1 n% M
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.* r8 `+ g8 m. @2 u6 ?4 {1 W& z
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. 5.39.217.760 f2 M" a, [0 k6 T1 T" n1 E& {
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。1 v; Z1 [* B, H9 @% G; X
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. 5.39.217.76% w: i# M e3 t
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# _6 t4 G4 }& S' ]9 H r" TTVBNOW 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 d; }' L( V2 Y' h% 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。
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