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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
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If you are not a Physics person, read on and learn a fact of physics.   
8 I2 `9 Z4 t: b& [7 v, I' q/ _. c4 atvb now,tvbnow,bttvbAMAZING!
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 l" g5 y- e/ l' m7 m7 m

7 W! C" S! d7 l6 I: ?" kEven after you see it, it is still hard to believe!
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  q6 T/ S) M* u# E: v9 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。( ^& v1 k% _7 ]% D, @  o
Magdeburg Water Bridge in Germany  
What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering!
8 ?0 \3 |  v5 }9 V5 i: p! t1 y! Ztvb now,tvbnow,bttvbThis is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project. 5 K1 l% W3 H. a9 Q% I: Y
It is located in the city of Magdeburg, near Berlin.
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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。$ Y. n. \3 h2 x; M  q
The photo was taken on the day of inauguration.
( c! o- ]; A3 }6 S* }* WTo those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.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 X6 f* c3 `7 {+ L- M5 L! _+ a
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。  X  b- l7 a0 J- C: s3 D# w+ H5 H
Question:
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Did that bridge have to be designed to withstand the additional weight of ship and barge traffic," D  {* d& U- l5 J, X6 e3 \
Or just the weight of the water? 5.39.217.76% [( e6 D8 W5 Z( I. U
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Answer:

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It only needs to be designed to withstand the weight of  the water!
# Q) M* Z3 {% j  J- 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

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* J1 T( a9 a7 F! E0 _- B0 d5 Gtvb now,tvbnow,bttvb
The Incredible Magdeburg Water Bridge in Germany
: E% {! q8 N2 A% NThe 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.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。1 F  {5 n4 S3 S
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. 5.39.217.76; Q- x0 I$ k8 ?' G6 L
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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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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。3 E$ z2 F: S7 w2 h0 q9 S) E7 Q
連通兩條水道的最初構思,而羅騰湖 Rothensee 升船機及大橋錨碇5.39.217.76- p* D9 X7 S/ r  k0 P
也於 1938 年安裝就位,但在二次大戰期間,建設工程被推遲。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。* G2 w5 V8 m) }# p
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。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。0 ~) w/ h( X) E) w4 K% a/ s' D
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。5.39.217.761 O) @  E$ u: s$ G) D
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
& y: J- a! g3 D公仔箱論壇立方公尺混凝土,完成了巨大的水橋,連接柏林的內陸港與萊茵河沿岸港口。 ( Z$ x% F1 X& ~( j  y
2003 年正式通航,水橋全長 918 公尺。 而 2003 年之前,在米德蘭運河和% R" c6 ~, p$ v2 W9 C* E
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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