本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯 3 o6 F4 N& q' f, D. Z. l- C
: T' |8 H$ M! o) Ztvb now,tvbnow,bttvbIf you are not a Physics person, read on and learn a fact of physics. + N p: f- M r0 F3 g# Y: \
AMAZING! 5.39.217.762 E. T% g' p; C; O5 `+ _! N2 Y% g
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Even after you see it, it is still hard to believe!8 I% @6 B" e5 C( y
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Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering! J: r9 n- q% J- H
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project.
$ \: X9 t! l L3 H+ C" `. p公仔箱論壇It is located in the city of Magdeburg, near Berlin.
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The photo was taken on the day of inauguration., p3 J4 C2 J% [9 T& a) q( E, w0 W2 F
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.
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Question:" R* `7 q7 Z1 ?% {. D* v
* k4 {! P3 x3 V; c* i2 j+ o公仔箱論壇Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,
2 A! Q% S2 M/ K* J* ]公仔箱論壇Or just the weight of the water? 3 [ r: H" [0 {0 y( z
6 d) j; K( k* f: t ]5 K4 atvb now,tvbnow,bttvbAnswer:
C* d: c4 [8 A+ J% `4 cTVBNOW 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。
! ~/ Y+ x6 L+ o) qIt only needs to be designed to withstand the weight of the water!
4 j: F6 A0 d2 c+ |; G$ [5.39.217.76Why? A ship always displaces an amount of water that weighs the same as the ship, regardless of how heavily a ship may be loaded: Y. v+ f, J+ [/ u) S0 |0 ]
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The Incredible Magdeburg Water Bridge in Germany
* k5 \4 N$ t* X4 x: ~ l2 CThe 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.
$ w' @1 l7 D0 k6 yThe 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. / c# T8 L% a( p1 i0 x3 k
/ p7 l [7 C8 H0 W# _0 c h: ]tvb now,tvbnow,bttvbConstruction 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: G* q4 H; j1 l& s
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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。; @4 g: u% v# K
3 m5 u( ~4 ]5 U: ]$ t3 KTVBNOW 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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