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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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2 U* x6 u/ t. nIf you are not a Physics person, read on and learn a fact of physics.   公仔箱論壇$ \) Y: x3 S$ C; V/ k
AMAZING!

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Even after you see it, it is still hard to believe!

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' M+ ?+ m3 `, ^Magdeburg Water Bridge in Germany  
What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering! tvb now,tvbnow,bttvb9 }7 c7 \" k+ N7 R* O- |9 J8 M$ Y
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project. 公仔箱論壇" |; V, H) o& w: j
It is located in the city of Magdeburg, near Berlin.
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The photo was taken on the day of inauguration.+ y" P: H. L* u. F4 J, V
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.5.39.217.77:88988 V+ ?5 t$ ^+ y% Y

  w1 r& \  |' J" P4 x( c( atvb now,tvbnow,bttvbQuestion:
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Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,
2 @# X: ?7 L+ r4 I- T' l4 ?公仔箱論壇Or just the weight of the water?
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Answer:

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8 l5 O; ~9 O% |  ZIt only needs to be designed to withstand the weight of  the water! 5.39.217.77:8898) W/ \5 G( |2 h
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 Germany5.39.217.77:88987 I2 o& n; `1 \# N, O
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1 d; ]2 @% m4 C9 m# }( Q$ e9 z3 P; b
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,bttvb- }7 ~& Y' I  x' V! z* v. Q

7 C1 ~5 m- N" k1 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。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.
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 T) ^4 V+ S0 X7 _* D/ 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5.39.217.77:8898/ V) x* ^% [" j# h# m
連通兩條水道的最初構思,而羅騰湖 Rothensee 升船機及大橋錨碇: h1 O* _+ i5 `% b. a
也於 1938 年安裝就位,但在二次大戰期間,建設工程被推遲。
) Q& t: a0 R( E/ s! A6 [! vtvb now,tvbnow,bttvb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。
1 p+ [7 ^, G; Y1 D, f: 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。公仔箱論壇: W$ w# u7 x5 E4 i
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
. z: Y4 t1 B( V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。
! n( H2 ~9 r0 o' W6 {, e( P# x5.39.217.77:88982003 年正式通航,水橋全長 918 公尺。 而 2003 年之前,在米德蘭運河和
$ N% H1 L7 i9 e$ n公仔箱論壇易北河-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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