本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯 0 S" R/ ?4 J' T$ i! J
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If you are not a Physics person, read on and learn a fact of physics. 5.39.217.76" y0 \6 P: {3 P2 J# C1 X! Y
AMAZING! 5.39.217.76( a' [/ n( H2 d( E+ o3 T
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Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering! 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。6 u: y: g9 i- o' o
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project.
0 G- _; ?( U; c, U* \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。It is located in the city of Magdeburg, near Berlin.
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1 T5 L+ {$ X( Z! }The photo was taken on the day of inauguration.
9 @ ?4 q+ [' n4 r: N7 ZTo those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.tvb now,tvbnow,bttvb. ^3 J( r1 D- j! A
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Question:tvb now,tvbnow,bttvb; ?5 Q+ I9 e& l- W7 Z; i
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。3 |, E& ]9 d) O7 N' k9 L
Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,
3 H9 |6 ~5 x' H% I4 I" P公仔箱論壇Or just the weight of the water?
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Answer:5.39.217.764 n; F, a' j& b+ b
1 p( n8 [! S& L. p0 otvb now,tvbnow,bttvbIt only needs to be designed to withstand the weight of the water! : d3 K; {$ M1 I! z
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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/ O4 A7 G- v" K8 a0 }+ I% 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。. _# e! k/ \6 O: J2 b. ]
The Incredible Magdeburg Water Bridge in Germany
; x0 E8 \* t# f3 F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.5.39.217.762 K0 b/ w" F3 c+ 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. ; P4 M0 H* V) ?5 o. j8 i/ K
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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.
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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。: x6 | k; V9 N. s, {( s
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