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 ; u' Z$ i( s% n# H! m公仔箱論壇 ! v# U3 A0 `% R9 J) x公仔箱論壇If you are not a Physics person, read on and learn a fact of physics. 1 D# a I2 \, d3 c9 b5.39.217.77AMAZING! 2 b% M6 C6 F& e* I5.39.217.77公仔箱論壇6 ^. ^! B0 B" D' y- z4 ]
Even after you see it, it is still hard to believe!5.39.217.77& o8 h4 R b4 g( n2 z [attach]1486499[/attach] ! i+ e5 Q' R8 W- q$ h6 C H7 ~( K. a7 R' E: h3 M" R% o5.39.217.77Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering! 5.39.217.77' R# M: L: Y. c# x9 f
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project. ; Q' g4 w3 f/ T) \9 y2 i' G" eIt is located in the city of Magdeburg, near Berlin.tvb now,tvbnow,bttvb+ }- r2 F: ?% F! f: u
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The photo was taken on the day of inauguration. 6 q4 g) H' U1 t, n( V1 K8 bTo those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists. & d( A2 O ^) T5.39.217.77 ( u' u& ^$ I3 q+ F- z- l( XTVBNOW 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。Question: 2 B6 q* ^+ l. j# \' d6 ` 0 x) h# r$ x$ {& I/ m$ Ntvb now,tvbnow,bttvbDid that bridge have to be designed to withstand the additional weight of ship and barge traffic, # n* Q/ o0 x T4 x/ Atvb now,tvbnow,bttvbOr just the weight of the water? 5 I3 h* h1 k" b) ~; M公仔箱論壇0 H4 o, N3 e, {) f
Answer: 5 m/ _7 a/ s- C4 NTVBNOW 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。! i# ?/ @" X& t+ e9 V6 C
It only needs to be designed to withstand the weight of the water! ' m$ u( K6 ?0 I$ I! ?
Why? 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,bttvb6 G! x) H" S* w * V* L4 N) k; S6 e! H4 B1 b8 hTVBNOW 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。+ r& g& S+ ^: g; o. y8 K The Incredible Magdeburg Water Bridge in Germany 5 j8 { K$ v3 n! F& j- M% |5 `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. / n$ b: J$ }: f% P" o4 Y0 \& wThe 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. 5.39.217.77/ O% G1 _5 q; k6 w* t1 V5 {
. y3 M% j& e* a' Y2 O( g' Y4 aConstruction 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。2 r$ Y$ L' _& x: o- t% q
