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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 公仔箱論壇& I; P9 a: U( s& }! p8 y- G

+ U' p9 l5 K# k. Y, [. PIf you are not a Physics person, read on and learn a fact of physics.   8 N* m/ t) k$ p6 v# _  o
AMAZING!
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# S! l3 D0 s1 J" |; i! p( L公仔箱論壇Even after you see it, it is still hard to believe!
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* E4 ]8 W4 y3 U, a4 w! |" X  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。Magdeburg Water Bridge in Germany  
What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering!
' R1 ?  p5 z5 M+ a$ e; m2 o" b- Ytvb 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. * q5 E" r+ i4 G" g4 S# Q$ O
It is located in the city of Magdeburg, near Berlin.

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The photo was taken on the day of inauguration.+ n: ~- v  g% N
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.5.39.217.77:8898* C$ ~& Y) ^8 g! t6 H0 v8 Y
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 C' A$ p* M6 b/ Z6 j5 ?
Question:
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Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,, k/ N7 U2 c& ^6 Q. f0 f
Or just the weight of the water? / q+ ^5 C0 N* f+ H& s, k

9 {2 Z/ A. i9 W) V8 ?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。Answer:

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7 w# a3 p: \- B( ]5 u& [, R0 G公仔箱論壇It only needs to be designed to withstand the weight of  the water!
5 w6 Y& E/ Q2 x% ]) {3 m$ k公仔箱論壇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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+ i& n. q* ]' vtvb now,tvbnow,bttvb
The Incredible Magdeburg Water Bridge in Germany9 u" x" |& X3 Z1 a* 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.
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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. tvb now,tvbnow,bttvb3 u& ^2 R. _# {/ V  f' B4 E

' ?( A7 M' p* _* y. j; j+ Ftvb now,tvbnow,bttvbConstruction 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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% l/ x4 a. W# p* B* N* W# B% ~) `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。[attach]1486500[/attach]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 @+ o1 x& ]0 W# a
[attach]1486501[/attach]tvb now,tvbnow,bttvb, A7 i) M. J0 D7 {+ C% ]8 f+ ]
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[attach]1486505[/attach]tvb now,tvbnow,bttvb6 N& F  V4 t& ~+ O
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作者: busyfun    時間: 2011-10-4 11:33 AM

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
3 O& J% k9 H8 ]9 ?1 B* ?" e5.39.217.77:8898連通兩條水道的最初構思,而羅騰湖 Rothensee 升船機及大橋錨碇
$ N. z3 x; \1 S% F: M! _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。也於 1938 年安裝就位,但在二次大戰期間,建設工程被推遲。
& D  d8 I5 x/ Q0 E4 o3 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。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。
5 E. G  W+ k" U& G+ ?  g5.39.217.77:8898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。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。9 n' d4 @7 F9 S
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% ?/ S/ V9 V- c
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。
$ r" E% ?+ s6 Y5 g7 L  v公仔箱論壇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5.39.217.77:88989 Q$ N+ @  o, H: x' x* U$ w
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。
作者: swyip21    時間: 2011-10-7 10:19 AM

多谢您的分享!
作者: Mimisan    時間: 2011-10-12 11:01 AM

first time heard & saw it, thanks for sharing, thanks tvboxnow!!
作者: pepperjellabies    時間: 2011-10-15 09:35 PM

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