標題: EVER SEEN A RIVER OVER A RIVER? [打印本頁] 作者: lilitan008 時間: 2011-10-2 10:09 PM 標題: EVER SEEN A RIVER OVER A RIVER?
本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯 公仔箱論壇0 g& z% z. [6 @9 c0 H$ p. `4 t
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If you are not a Physics person, read on and learn a fact of physics. tvb now,tvbnow,bttvb4 L% `4 A, }9 g2 L/ x3 y9 L
AMAZING! 7 d. P- L, D) }* y! t/ x: n5.39.217.77:88988 b: e0 @! U( m, V
Even after you see it, it is still hard to believe!1 w' H1 g2 ^5 j) b [attach]1486499[/attach] 2 V5 C" }) v3 C7 i7 u公仔箱論壇公仔箱論壇- w% Z8 @' C' W
Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering! 5 }/ o8 ?0 T+ y, V9 kThis is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project. . S, ^2 K$ U6 x
It is located in the city of Magdeburg, near Berlin. " c$ l1 M: v$ u8 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。tvb now,tvbnow,bttvb3 Q" D* g) l$ L: |, s& Z& G. i
The photo was taken on the day of inauguration. 5 ^1 R5 k) Y4 @& T! c7 Etvb now,tvbnow,bttvbTo those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists. ' }* Y1 [7 X/ q! n( xtvb now,tvbnow,bttvb/ k( j1 j1 O: ?1 p6 Q# @
Question:3 Q$ j ~& ]* u! p$ x% {
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Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,公仔箱論壇& X5 H! p, { W' S' F+ l
Or just the weight of the water? ( }: Q/ R( m, F- d h+ M# q3 btvb now,tvbnow,bttvb% i$ S) y0 t$ K+ A9 W: E/ L- T
Answer: 6 Q8 ^. b1 G6 ^ {. a' v公仔箱論壇 1 z3 h4 m: p9 o, zIt only needs to be designed to withstand the weight of the water! + O1 A- W: b0 D8 G2 U5.39.217.77:8898Why? A ship always displaces an amount of water that weighs the same as the ship, regardless of how heavily a ship may be loadedtvb now,tvbnow,bttvb& s$ p9 G/ e J: w. c6 ^! X0 m9 W 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。4 U1 W2 U* w# v0 v e. \1 ^
5 k& S8 V: w* o! h2 R公仔箱論壇The Incredible Magdeburg Water Bridge in Germany公仔箱論壇6 B- S) L. E4 m, p
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.) U, \4 a$ W1 I6 F2 l4 H2 |/ v
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. 8 G: p/ _, o3 }* T* m
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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. ; \8 ^; M5 ]( R, r1 Z5 a$ U5 {
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