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標題: EVER SEEN A RIVER OVER A RIVER? [打印本頁]

作者: lilitan008    時間: 2011-10-2 10:09 PM     標題: 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,bttvb0 G5 ?! v2 T4 o8 f
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If you are not a Physics person, read on and learn a fact of physics.   
4 e( U& e3 h% l5 K4 @( P. Z' @tvb now,tvbnow,bttvbAMAZING!

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Even after you see it, it is still hard to believe!
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[attach]1486499[/attach]tvb now,tvbnow,bttvb; b6 ]5 _: J- Q" s
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Magdeburg Water Bridge in Germany  
What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering!
  @- o  }- e. j* K公仔箱論壇This 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, c+ c' y, J4 e6 W+ q/ G% n
It is located in the city of Magdeburg, near Berlin.

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The photo was taken on the day of inauguration.
& G5 X, f, _+ I8 B; FTo those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.
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Question:
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。/ \  R+ x2 n5 h* G  H
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Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,
$ g+ ^6 |* \, w, M* q1 `; y公仔箱論壇Or just the weight of the water? 0 e( ^$ V! N4 V! X8 d0 P4 i
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Answer:
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$ O: t) @: `0 p4 p2 C公仔箱論壇It only needs to be designed to withstand the weight of  the water!
$ i* p# ^; ]% l, `2 oWhy? 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 GermanyTVBNOW 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 k/ p( r3 ~( t; n" q  S# E
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* ~% J& @; I% D; @' A7 q& \: c
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. tvb now,tvbnow,bttvb3 {( h/ M- ~3 C$ @) E$ n0 x

; E+ D  c+ v" Y8 B+ n+ `Construction 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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作者: busyfun    時間: 2011-10-4 11:33 AM

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
4 r4 K1 z7 c8 z; m2 {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 _/ C- |: ~2 Y" Q, x  n
也於 1938 年安裝就位,但在二次大戰期間,建設工程被推遲。2 J8 n6 y2 H6 `, w% E
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。公仔箱論壇3 `2 Y9 M. I5 F* 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。
1 u, _6 N- }) p7 C8 CTVBNOW 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
; {; a3 ^0 ^+ ]" P3 s! o2 g公仔箱論壇立方公尺混凝土,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6 f2 W! T7 A3 x8 \
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5.39.217.77:88982 p$ R; `8 o4 f( s( ?1 r
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。
作者: swyip21    時間: 2011-10-7 10:19 AM

多谢您的分享!
作者: Mimisan    時間: 2011-10-12 11:01 AM

first time heard & saw it, thanks for sharing, thanks tvboxnow!!
作者: pepperjellabies    時間: 2011-10-15 09:35 PM

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