本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯 tvb now,tvbnow,bttvb! w% Q' l9 R3 j
/ {0 u0 r; A z1 j& U! R4 h5 w% i1 {5.39.217.77:8898If you are not a Physics person, read on and learn a fact of physics.
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$ U6 z% I$ u mEven after you see it, it is still hard to believe!7 ]1 T- e* j; h8 |
公仔箱論壇% w$ f" I2 m/ @3 {% X
/ s& |. S2 I: A8 } ?! o5 x公仔箱論壇Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering!
8 b. y7 \2 m/ Y3 Q3 J7 c% j5.39.217.77:8898This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project. ; V/ e7 F1 g1 R! o5 v
It is located in the city of Magdeburg, near Berlin.# I8 ~1 }2 [+ f
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The photo was taken on the day of inauguration.
( v9 @$ `# l& q! Ctvb now,tvbnow,bttvbTo those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.
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Question: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。5 @) c2 g0 @; ?! b! _* O* n
1 a; k- C% T% t7 ^# X/ P8 w8 O. R公仔箱論壇Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,tvb now,tvbnow,bttvb6 f+ x: m" W3 a' |# L$ h
Or just the weight of the water? tvb now,tvbnow,bttvb' X. M- g- M" d! E, P
+ o) @4 D- h+ Q7 a2 F1 ?; G8 htvb now,tvbnow,bttvbAnswer:公仔箱論壇# `: ]: e) C# W, J: C
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。7 F2 ~. [0 n% }; T1 O7 p/ l* Q
It only needs to be designed to withstand the weight of the water! 2 P+ u, B9 d3 O& ?8 K% C, v
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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8 a1 }* b6 l+ k6 L2 @% u: W8 _The Incredible Magdeburg Water Bridge in Germany4 i/ A5 w6 Q* f1 ^: E: i
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.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。, F+ o0 z/ f: v" u) L! ~3 c; p+ d0 t
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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. {: N: `- o1 M0 c/ p" gConstruction 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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3 m( W* ^1 M2 O/ W公仔箱論壇tvb now,tvbnow,bttvb' l: ^* w9 O( F* L$ b4 `
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% |8 W. J) j9 T7 d3 A5.39.217.77:8898TVBNOW 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。2 q2 j& ~5 K8 m1 Z2 x& B1 v0 ?
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發表於 2011-10-2 10:09 PM
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發表於 2011-10-4 11:33 AM
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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。1 D! j. s* `1 }! [1 M
發表於 2011-10-15 09:35 PM
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