本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯
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2 r4 I u% ?0 g# u2 { D$ ^6 H8 d公仔箱論壇If you are not a Physics person, read on and learn a fact of physics.
% b' w) I% e: k0 Y! K0 z5.39.217.77AMAZING!
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Even after you see it, it is still hard to believe!
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Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering! 公仔箱論壇. Q& h1 U+ B& n- d/ p I
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project. * U, y! L; Z1 p" |
It is located in the city of Magdeburg, near Berlin.5.39.217.77, f: d5 a1 X8 S( H: g! U
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。; i/ ]& d+ B: S+ Z) o$ n( Z& s
The photo was taken on the day of inauguration.3 R. I D9 a% R& a9 \7 e! h7 X
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.
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Question:5.39.217.77% }7 \$ r8 t+ x6 Q x* i9 D6 ~
3 ^- q& w7 }( x* S l1 vtvb now,tvbnow,bttvbDid that bridge have to be designed to withstand the additional weight of ship and barge traffic,公仔箱論壇* `' Z8 T6 v% Q. L. G0 {( ]" c
Or just the weight of the water? " w7 K! O+ Q5 G
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Answer:/ ~6 V# t! M5 v% E Y, ^, N
r9 [5 T' |: _2 I& P/ Wtvb now,tvbnow,bttvbIt only needs to be designed to withstand the weight of the water! , I% h1 v Z* ?& W
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 Germany# w# k# r p' W) p4 Q' s0 B" b; U
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.
/ f. C+ @! @* k% ptvb now,tvbnow,bttvbThe 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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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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! d1 z t1 q. U3 r+ ]7 _5 OTVBNOW 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 y3 l* k; X- |$ K A! V3 M
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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。0 _% b1 L8 S) s3 m% n7 _$ k! V6 @
+ O, d5 p- e& D: QTVBNOW 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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