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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
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If you are not a Physics person, read on and learn a fact of physics.   
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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!
* Z+ N/ \. Q0 R) a& @0 `3 `# cThis 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- p6 p' s& u) c5 I! Z$ |8 X1 g' C
It 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。2 l6 X$ p! L3 W4 p- Y
The photo was taken on the day of inauguration.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。+ M  C' c  N' F1 o8 x9 [( Y
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,5.39.217.763 Q$ Y! }) b1 j( z; _' w
Or just the weight of the water? tvb now,tvbnow,bttvb8 V; o8 P8 U& Z, _  H
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Answer:
tvb now,tvbnow,bttvb+ j& M$ o& ?3 l: M+ F) \  T

* M$ V1 Q1 h3 p( k8 G/ U' Jtvb now,tvbnow,bttvbIt only needs to be designed to withstand the weight of  the water!
- }$ n- T3 M7 v$ X5 }! b! 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。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 Germany1 Y( ~6 C# F' j' R2 k/ J
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,bttvb  n! S3 F/ y3 |: d& G# D9 G
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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" T/ e+ c6 J) Z0 e( v5.39.217.76Construction 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.

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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。; W0 o. P' p% n; F
tvb now,tvbnow,bttvb' j# c) N  Z' f( v& s
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) y7 [6 C3 P! C9 l* n5 b( h$ j7 V5.39.217.76TVBNOW 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。2 T% m1 c% x( u) M0 d9 S

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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tvb now,tvbnow,bttvb9 n* E  S+ x* H- i  D
連通兩條水道的最初構思,而羅騰湖 Rothensee 升船機及大橋錨碇5.39.217.767 D$ H: S! N' b8 ]2 q
也於 1938 年安裝就位,但在二次大戰期間,建設工程被推遲。
0 p, |/ A% }1 G7 T' @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。, Q9 N# d- F& K( ]. @* }6 @' a5 w
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。# T2 f4 ^* j. _3 j
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。" P, h& A7 ]1 J# F* C$ _' P+ O% E
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。
. F. p1 y4 ]* f: t/ A. E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
* E6 ]) ~9 t- h9 E5 O' f# f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。
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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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