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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,bttvb1 a- e3 N2 n1 c' P, @

' |- `& F1 Y+ C* Y5 G) t4 a& ~9 H& g5.39.217.76If you are not a Physics person, read on and learn a fact of physics.   
$ @2 n7 a7 J$ ^/ C0 \公仔箱論壇AMAZING!

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9 X3 a0 D, {1 V5.39.217.76Even after you see it, it is still hard to believe!

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6 U$ j' I' d# w6 r9 L. Q公仔箱論壇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. a3 u1 N( o0 Z$ D# s- S
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project.
# ^' P. F1 u, [公仔箱論壇It is located in the city of Magdeburg, near Berlin.

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The photo was taken on the day of inauguration.
! N  Z+ w/ ?+ j8 M7 VTVBNOW 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。To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.5.39.217.76. T/ q9 ~6 @$ u5 F* N4 V) @
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Question:
公仔箱論壇/ T9 s  T% K1 U
公仔箱論壇# T- ~8 c) @" |" [3 E$ v' ^
Did that bridge have to be designed to withstand the additional weight of ship and barge traffic," e, ?, x9 g9 Z" ?2 q/ l
Or just the weight of the water? tvb now,tvbnow,bttvb* X4 I& g  k6 U; D. W/ u# c
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Answer:

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- M0 p; T1 m2 a8 t1 Q! m+ u6 s5 |' M5.39.217.76It only needs to be designed to withstand the weight of  the water!
' p( e6 K6 ^. L) e* N! Z- w* L公仔箱論壇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% U2 N. E+ U# I, v3 l3 ?0 m
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.
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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.
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2 q$ U7 A6 L5 ?! JConstruction 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
0 T# t8 {9 P; w$ D7 S連通兩條水道的最初構思,而羅騰湖 Rothensee 升船機及大橋錨碇公仔箱論壇" {( X( N5 N- d9 r
也於 1938 年安裝就位,但在二次大戰期間,建設工程被推遲。tvb now,tvbnow,bttvb; w4 @+ O- u( s5 N6 k( u
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。
' O; {8 }3 N" A/ Q/ \7 \6 s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 E1 Z: V' v9 w  q- wTVBNOW 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。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( p; @- k* [  }8 i9 \. o3 I9 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。 公仔箱論壇7 j5 y! c' E  I; G9 }9 p# z0 M8 O  }
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
$ Z) N" m, f+ C6 Z  e+ I: }tvb now,tvbnow,bttvb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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