EVER SEEN A RIVER OVER A RIVER?

lilitan008

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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!1 Y. p  R/ `/ E9 H7 j8 Q  n

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" {/ X4 \1 {( d: j/ i) |Magdeburg Water Bridge in Germany  What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering! 5 q5 }+ C9 b; b: Q8 c
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project. * x) D. Z6 `% k8 w0 I1 R+ T
It is located in the city of Magdeburg, near Berlin.公仔箱論壇2 b/ z( O8 B- W; F

" j0 C( K, \6 Z1 J! P& R+ [* y公仔箱論壇The photo was taken on the day of inauguration.
2 s4 J' V$ h- Q/ z& C( w6 E公仔箱論壇To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.
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Question:$ }( ?5 w8 |* Y2 o$ Z4 R
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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。' {4 ]2 U3 C( f4 s
Or just the weight of the water? & T* W/ q2 k- d& g  V( S
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Answer:
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It only needs to be designed to withstand the weight of  the water! ; ?1 x- J2 N( r9 ~4 d
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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  Z$ `3 \) F6 M6 v- C' I, WThe Incredible Magdeburg Water Bridge in Germany' D, k$ K! }8 y5 R% A7 e- A/ S9 H
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$ H% |/ s4 w! y5 U( X6 R
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. ; n; ~4 d, g" K  t, Q5 K

& f- H- i/ x% ^# KConstruction 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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busyfun

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
- o0 o( c& C$ c4 W; L7 Z3 F1 p# k* E7 Yos.tvboxnow.com連通兩條水道的最初構思，而羅騰湖 Rothensee 升船機及大橋錨碇8 u/ x$ A; N! ], o3 y
也於 1938 年安裝就位，但在二次大戰期間，建設工程被推遲。
3 y( O+ @  ~3 x8 T- S1 x6 ztvb 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。
- w6 v! g& V# N( c: S3 z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。
) E( E  F0 c8 g5 b# C8 T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tvb now,tvbnow,bttvb& Y3 G$ F3 m3 c  v. X
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。 , B9 [7 }  [; _$ T
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,bttvb5 w, r4 [; b( w9 ?% m
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。

swyip21

多谢您的分享！

Mimisan

first time heard & saw it, thanks for sharing, thanks tvboxnow!!