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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 tvb now,tvbnow,bttvb9 v7 b, e! _5 t% j* L7 F" n

8 ?! k3 `9 ^6 t0 N4 _If you are not a Physics person, read on and learn a fact of physics.   
1 p  {3 U" C, _6 BAMAZING!
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公仔箱論壇  ~- i) D2 K# ?* F$ |* v5 S
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! tvb now,tvbnow,bttvb& ~7 q6 P* S' D7 `) [  r- ]8 h
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project.
; x* m6 ]$ g4 v, _  j2 d5.39.217.76It is located in the city of Magdeburg, near Berlin.
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The photo was taken on the day of inauguration.; i) ^$ d  g5 I) R) I
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.
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Question:
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Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,公仔箱論壇  ^/ ?* O% q" @/ W* k. `+ E2 S: y
Or just the weight of the water? 9 Q& G& |! J/ u( ^# c

- J  _$ {5 T9 `tvb now,tvbnow,bttvbAnswer:

+ y8 g6 P1 R- {. D7 L6 l5.39.217.76TVBNOW 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 @/ X. S, k9 T" w1 Z' C% p
It only needs to be designed to withstand the weight of  the water!
3 p* @9 P$ Y' b; |& H- Atvb now,tvbnow,bttvbWhy? 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
' l; i2 W( K+ N: f3 o* AThe 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. " k2 O% v' V/ }4 |

+ W8 ]" h. _& htvb 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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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
% W: t1 ]: l2 h' I, l7 b, s$ L連通兩條水道的最初構思,而羅騰湖 Rothensee 升船機及大橋錨碇
& ^; [9 O7 ~' E4 m也於 1938 年安裝就位,但在二次大戰期間,建設工程被推遲。5.39.217.763 [( ?9 h2 v, U) Y. t# E6 O
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。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。. u' K6 P) E7 j) y/ Q" r
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。
& N* m+ P* ?; G( |9 {) p. [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
* o: [( n0 V, n" b7 T2 H3 p. 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。
0 q. F, i0 B9 z9 e7 B2 S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tvb now,tvbnow,bttvb. O# P( j# B1 g! T) d8 ?" d
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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