本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯 tvb now,tvbnow,bttvb( n& y( \$ S) U0 d8 K# r. I0 s
0 z1 z; U; c4 X% S+ N( n% TIf you are not a Physics person, read on and learn a fact of physics. - i, M* j, q2 |7 |
AMAZING!
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Even after you see it, it is still hard to believe!
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5 A" r; `4 R) C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!
/ f, s3 s. `* ^! r, i4 J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.
9 p" J6 ?* x2 i; T, J' \0 B公仔箱論壇It is located in the city of Magdeburg, near Berlin.tvb now,tvbnow,bttvb! M8 ?4 w% c9 J) W) r
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The photo was taken on the day of inauguration.
1 p; x: a' h2 T6 _9 [; \5.39.217.76To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.' g; H: a3 d9 M" }3 m; S. B, L- P8 @
4 U4 G1 r/ e; {& }8 d7 @公仔箱論壇Question:
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Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,
) W) I7 M4 c! I3 G5.39.217.76Or just the weight of the water?
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+ ]# q$ \& b- R5.39.217.76Answer:公仔箱論壇6 ^8 U" A: v2 V2 I3 Z K; \
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* F5 B+ J# ?1 u+ K7 z5 I
It only needs to be designed to withstand the weight of the water!
# J% V1 W+ B& o8 l. k- ^" otvb now,tvbnow,bttvbWhy? 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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1 S1 l1 p5 b3 R公仔箱論壇tvb now,tvbnow,bttvb9 a8 a+ `( ~. \" ]4 m& \
The Incredible Magdeburg Water Bridge in Germany
9 T' A3 C5 T7 X" G公仔箱論壇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.5.39.217.76( G# T+ G, @! S, 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. $ v9 m' R# q8 t/ R
9 K. o! q) C; P3 s: W公仔箱論壇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. 公仔箱論壇 H* ]& Y0 v8 y
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! S# s1 m+ |# F5 w- C6 G% f. |+ l' lTVBNOW 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。! b1 {$ U5 k9 [3 @1 t, Z) t- C
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( M) }! o1 b6 F' j& x公仔箱論壇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 x( [! Z& g) X- {2 e# ~/ E$ _
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