本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯
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If you are not a Physics person, read on and learn a fact of physics.
* V* q: ]1 R4 c- M4 K8 ETVBNOW 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。AMAZING! 2 j; y6 J* |5 m/ n+ p) ^6 e
. ^1 z. ~& {1 l4 C/ {& y6 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。Even after you see it, it is still hard to believe!
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% L: J5 J3 e8 o" b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! 5.39.217.761 j/ b9 U2 M- c: Y3 h+ Y$ I
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' h3 N( k0 \# u
It is located in the city of Magdeburg, near Berlin.
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# ]9 Y) O: J8 X9 _8 Y' i% T, J) xtvb now,tvbnow,bttvbThe photo was taken on the day of inauguration.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。 t" {1 j# q6 ?7 s; l$ y6 s
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, J8 {8 u( [# ~: ^: B5 c2 f
Or just the weight of the water?
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y8 Y7 N6 V) ytvb now,tvbnow,bttvbAnswer:tvb now,tvbnow,bttvb) U( [6 q- t9 t a0 w+ V* [
# C' K6 y3 k1 e S4 c; C; P公仔箱論壇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。/ [1 F) s3 T N0 P( P
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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2 T6 U" O# h7 a# j4 [' btvb now,tvbnow,bttvbThe Incredible Magdeburg Water Bridge in Germany公仔箱論壇' M; B0 O6 D7 \
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.
# G) j0 `# Y' H/ mThe 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. 0 R" E' ]# O8 f6 d6 w3 N( x9 r# ^
: Y+ ?8 [, \( ^/ ]8 ]% PConstruction 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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發表於 2011-10-2 10:09 PM
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