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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 ; a) Z6 D! x; g

5 E% ]  v: Q9 a6 x5 ^5 `  z  dIf you are not a Physics person, read on and learn a fact of physics.   tvb now,tvbnow,bttvb3 l7 k0 ^+ O, e! F
AMAZING!
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4 `4 ?' M1 ^0 H+ u" T# r* k公仔箱論壇Even 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. O: s, O" P6 X/ Z9 W2 O
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project.
3 U/ @- |$ j; s0 [: o2 [+ ^/ z0 oIt 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。9 o0 R$ C( w+ u5 }
The photo was taken on the day of inauguration.
  g. A1 ?7 |9 M& o7 hTo those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.公仔箱論壇" O" m4 r# M1 O( e# a

; B" e7 ~% g  Y9 S8 M  Q+ [& c公仔箱論壇Question:

2 K& U/ f1 ^! {6 G) e$ R公仔箱論壇5.39.217.761 A' V4 \- }& j9 Q% u$ B0 ~
Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,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 p' J8 g5 Q; A$ c" d$ C0 l4 H* p; Z
Or just the weight of the water?
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0 F* p) p$ L" }8 KAnswer:
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It only needs to be designed to withstand the weight of  the water! 公仔箱論壇$ c$ K$ F/ |1 A2 ~5 D; g
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
! C+ Y1 S" c& g, k' g- KThe 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.tvb now,tvbnow,bttvb' l+ M  f. v3 b) t8 F" c0 W- F' ^
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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' J# M2 g) `: {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.

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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。! k6 O5 R- v$ i5 O, i  z
5.39.217.76! r# o5 J, _: D% I, K# p
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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
) ?' n1 j& L1 G% S% `& z連通兩條水道的最初構思,而羅騰湖 Rothensee 升船機及大橋錨碇tvb now,tvbnow,bttvb- K& E& E$ h- h; U# y
也於 1938 年安裝就位,但在二次大戰期間,建設工程被推遲。( ~, `1 W' T8 _
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。
4 T6 P% L# u) G  }0 P/ {tvb now,tvbnow,bttvb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 C! `( a8 \/ s% ?公仔箱論壇於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
; i# J- @# Q1 x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. [. Z( [4 ^) c- 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。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
  d  l( W! s( p) }' W& ^9 f5.39.217.76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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  • k23bb

多谢您的分享!
first time heard & saw it, thanks for sharing, thanks tvboxnow!!
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