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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. }6 H+ y* k6 M4 Y) ]7 ?公仔箱論壇公仔箱論壇# L, @/ ~" p# t  x
If you are not a Physics person, read on and learn a fact of physics.   $ z! E2 e+ L/ l& s, ?( m
AMAZING!

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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!
( ]% ]8 i  `1 U# d" t" z" p! f' 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。This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project.
& Q) k* o3 k8 Z/ ^6 t" V! T1 c7 etvb now,tvbnow,bttvbIt is located in the city of Magdeburg, near Berlin.
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9 y/ \  y& X. q! B! t2 p公仔箱論壇The photo was taken on the day of inauguration.! l9 n8 }9 s! J0 t$ U
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.
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Question:

5 k9 A/ Q+ }+ A( a  Itvb now,tvbnow,bttvb
7 _; ~* k% D1 M0 c1 l- |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。Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,
9 o! _- r1 L2 n公仔箱論壇Or just the weight of the water?
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Answer:

: w' E9 h& Z( b) ]3 U1 l6 tTVBNOW 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。5.39.217.766 [1 b4 X1 n1 L0 U0 f2 t
It only needs to be designed to withstand the weight of  the water!
; W* E+ e. i: h0 J! {7 [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。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

0 G) ^6 R3 D9 X" @4 J公仔箱論壇
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The Incredible Magdeburg Water Bridge in Germany0 A5 T& D# [$ N6 x4 p7 `
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.tvb now,tvbnow,bttvb1 i; w2 L8 w* n- j  h' O
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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* \# x2 r- O2 Y5 A* D/ Y5.39.217.76Construction 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.
公仔箱論壇* N" |' C. A( m) @" D

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公仔箱論壇; u& W8 P7 f* s, v( W  J1 T
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。5 Z& I' g- Y! S. a) `- {# @# n
tvb now,tvbnow,bttvb+ t1 g! B8 }' C! |
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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公仔箱論壇, L2 ~4 O/ k5 Z4 R5 r1 J" K
連通兩條水道的最初構思,而羅騰湖 Rothensee 升船機及大橋錨碇
& y! h; z9 r  a: p( w也於 1938 年安裝就位,但在二次大戰期間,建設工程被推遲。
! _2 T5 x5 o. c5 Y: E( K9 j5.39.217.76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。0 U) M  r3 V2 t" y- h" h
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。
- t- W- a- G) V; r2 p+ x/ Qtvb now,tvbnow,bttvb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
5 D3 P. H' [% k% Dtvb now,tvbnow,bttvb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。 tvb now,tvbnow,bttvb1 C% R  J2 `& D8 e, }
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
; _7 ~+ a& n' a, B. a5.39.217.76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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多谢您的分享!
first time heard & saw it, thanks for sharing, thanks tvboxnow!!
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