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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
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If you are not a Physics person, read on and learn a fact of physics.   tvb now,tvbnow,bttvb" |6 i# I7 g0 H0 k
AMAZING!
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! J& k# ?) a6 X5 A$ }3 T, Utvb now,tvbnow,bttvbEven 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! 公仔箱論壇9 Q- v' D9 F% w8 E# |
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project.
9 K& c( ~: Z: a. \' @' j7 w4 g公仔箱論壇It 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- g" p0 @: s$ b9 c$ X8 e
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.tvb now,tvbnow,bttvb. T* {4 G3 h0 M+ x4 X: E' U

3 e! X0 G2 Y/ A5 ]) dQuestion:

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* W- t7 t' G% B: t; H0 N9 V' Q. c公仔箱論壇Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,
# q1 ~1 Z/ y: U: e8 t0 s2 A0 r2 b$ oOr just the weight of the water? tvb now,tvbnow,bttvb5 F" f6 g0 d! V0 @
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Answer:

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It only needs to be designed to withstand the weight of  the water! 公仔箱論壇4 ?: t! ~7 v0 E* q8 k! q* 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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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" C2 X" o5 N. t) Q. K/ F
The Incredible Magdeburg Water Bridge in Germany5.39.217.77:8898! F6 I# Q+ b1 j! F( a
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.2 m' v2 t4 ^! K' X
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.
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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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[attach]1486503[/attach]
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[attach]1486505[/attach]5.39.217.77:8898; ?0 N6 z5 v; X; j6 @/ t% `4 I

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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5.39.217.77:8898" f7 r' m5 K- \3 Y0 Q, P, X& ?
連通兩條水道的最初構思,而羅騰湖 Rothensee 升船機及大橋錨碇
' L! I) i: z- T1 H/ I+ Z1 ]- }tvb now,tvbnow,bttvb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。2 w; Y& P, b' p" Y" b8 m
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。
: T! I6 \5 ~- ~; oTVBNOW 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。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。5.39.217.77:8898# k3 W, o/ }4 j& ?' E2 u+ t
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 萬0 }6 }1 b9 N+ x( C% i
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。 公仔箱論壇4 b; @( n) w8 a
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5.39.217.77:88988 ^8 h) s! e% K& q7 H2 c* R6 o1 t1 Y
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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