本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯
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If you are not a Physics person, read on and learn a fact of physics. tvb now,tvbnow,bttvb0 Z# ~% @2 s/ @( C, H
AMAZING! tvb now,tvbnow,bttvb5 Y3 x* D, ?* ^3 }
" Q2 V; U7 F! k/ L5.39.217.76Even after you see it, it is still hard to believe!
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Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering! tvb now,tvbnow,bttvb# D7 Y, D7 I8 x$ R% g
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project. ! ^+ M: L" ~) g8 R3 f
It is located in the city of Magdeburg, near Berlin.
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The photo was taken on the day of inauguration.
: l. t" L( ~! n0 b0 q5.39.217.76To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.1 ]% L3 q% _5 A& ^4 b5 t
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Question:
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( k' ~; J9 p' ADid that bridge have to be designed to withstand the additional weight of ship and barge traffic,5.39.217.765 H8 i! w6 k( C( \. Z! y: G
Or just the weight of the water? 公仔箱論壇( [- S0 Y" R; `8 [
7 \. @7 n9 |$ x" y' ?9 Ftvb now,tvbnow,bttvbAnswer: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 v3 A( X0 k8 |8 ^" Q% J+ D% m
/ T+ j- h u$ f2 \' H公仔箱論壇It only needs to be designed to withstand the weight of the water! ) F$ P5 r* X' P9 s, 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 loaded
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The Incredible Magdeburg Water Bridge in Germany公仔箱論壇$ {6 Z* f, S) B
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.公仔箱論壇9 v$ R6 b& x3 o; R; |) k J
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. 5.39.217.765 `. ~2 |6 y; @7 Q! M
; W; w4 \5 ~0 lConstruction 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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發表於 2011-10-2 10:09 PM
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發表於 2011-10-4 11:33 AM
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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。! C4 F5 Y7 T# f' @1 N
發表於 2011-10-15 09:35 PM
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