本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯
4 m2 s/ U$ Z* 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。
! w# P; G" K+ {0 S5 k F9 N" JTVBNOW 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。If you are not a Physics person, read on and learn a fact of physics.
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Even after you see it, it is still hard to believe!, t0 e! n7 M' i- F9 n8 ]
5.39.217.77:88982 a4 x6 X9 J; ]& V5 v
# S4 r6 Y4 J" _& u, C' 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。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2 r1 ~+ d( ]% p7 u! O: u, q
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project. 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- d6 d& T- j" T# o
It is located in the city of Magdeburg, near Berlin.
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" u6 r5 ~- z2 ]7 VTVBNOW 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。The photo was taken on the day of inauguration.
0 {% i+ p: L; Z/ Stvb now,tvbnow,bttvbTo those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.公仔箱論壇5 n& Y" X; _8 O
tvb now,tvbnow,bttvb$ R4 z- ^5 K0 G, P; D; _* D4 J; \
Question:
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Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,tvb now,tvbnow,bttvb5 G8 g4 T, S& T; g9 |1 f
Or just the weight of the water?
8 f' p+ O8 K; i/ I9 B* K9 \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。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。) G4 w7 j% N+ }) T
Answer:
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* f5 Y8 V2 o. P1 x2 S$ lIt only needs to be designed to withstand the weight of the water! 5.39.217.77:8898' {! o n* k8 F4 r& C
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 k3 d: |" m8 ?% R/ z: k
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The Incredible Magdeburg Water Bridge in Germany5.39.217.77:88980 v, D" j" X: D& e
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.+ c9 ^; E: y, ], H
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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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. 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。# x6 X) ^& T# D7 b. W6 t
. ]! O; p! ~; H% z8 k5 A1 STVBNOW 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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, |( T6 [& v3 r8 D. r5.39.217.77:8898
: s0 N- `% j3 a @1 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。
9 U" q2 p/ Y6 z ~ w- s. g7 i公仔箱論壇
0 y6 j1 c! @+ V" h& FTVBNOW 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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