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EVER SEEN A RIVER OVER A RIVER?

本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯 5.39.217.761 z5 e$ M& y" I; W1 @
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If you are not a Physics person, read on and learn a fact of physics.   tvb now,tvbnow,bttvb7 [3 p+ w8 v7 a0 P
AMAZING!
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Even after you see it, it is still hard to believe!
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. B: c: X6 [' g; qTVBNOW 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。Magdeburg Water Bridge in Germany  
What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering! ( U! L% U" A/ F+ A4 R9 F
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project.
$ I' A& q4 i5 ]0 gIt is located in the city of Magdeburg, near Berlin.

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The photo was taken on the day of inauguration.公仔箱論壇' B2 B8 ]! V2 x0 {3 h7 x* W
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.: `" }* z% k/ ?7 v1 }9 w
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Question:
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' t0 i1 J3 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。Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,
  |7 t6 o1 a+ b0 Y4 }$ S7 X* @5.39.217.76Or just the weight of the water?
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+ n. v0 X4 ]/ P0 E: FTVBNOW 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。Answer:
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0 y/ d" Q8 v5 \- j* r$ 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。It only needs to be designed to withstand the weight of  the water! 7 W6 h9 S3 k- {# \9 \. j# w
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
) d. z5 J# d) v5 U& v( ?! OThe 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.
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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. 5.39.217.761 a/ j: v" j+ U/ z

, g6 z. U$ P- z; bTVBNOW 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。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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5.39.217.76( ?: `' f; @- c
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6 q# G) x. i' TTVBNOW 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。公仔箱論壇, `+ E) u# J, T, N; x8 c

5 H* L1 v, B2 W& j' ~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。
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平壤核子能源研究所
這宏偉壯觀、傲視寰宇的工程傑作早在 1919 年工程師們即已提出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。7 l, X# M9 Z' y4 t' E
連通兩條水道的最初構思,而羅騰湖 Rothensee 升船機及大橋錨碇
4 z( ^) i, \' V0 Y5 f' M% M2 Z5.39.217.76也於 1938 年安裝就位,但在二次大戰期間,建設工程被推遲。
( Y. Z3 k8 ^8 ]公仔箱論壇隨後的冷戰時期,德國分裂,該專案被東德政府無限期地擱置下來。
' l+ c+ R3 ]# _7 d2 ~德國重新統一後,隨著道路交通重大工程規劃的編制,水橋再次成為一個優先專案。
+ k; ?6 O9 }' w" J. U. 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。於1997年開始建造,經過 6 年,耗資 5 億歐元,2.4 萬噸鋼材和 6.8 萬
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; [5 _8 a8 E* t* R6 \tvb now,tvbnow,bttvb2003 年正式通航,水橋全長 918 公尺。 而 2003 年之前,在米德蘭運河和公仔箱論壇$ e% c4 @, |5 d, }' M7 X
易北河-哈威爾運河之間運行的船舶不得不繞道 12 公里通過。
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多谢您的分享!
first time heard & saw it, thanks for sharing, thanks tvboxnow!!
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