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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
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If you are not a Physics person, read on and learn a fact of physics.   
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) n1 q! J. _1 ^5 \7 W( z8 g5.39.217.77:8898Even after you see it, it is still hard to believe!

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+ i2 m- I5 l  y6 LMagdeburg Water Bridge in Germany  
What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering!
; a4 R1 E* u# z* EThis is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project. - Q7 y% F, [2 p. }: O+ @) t
It is located in the city of Magdeburg, near Berlin.

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; f8 ^$ m/ N! \! M) Q公仔箱論壇The photo was taken on the day of inauguration.8 H/ K& l; W; \/ U0 Q; k9 U- l# @
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,tvb now,tvbnow,bttvb4 R$ `' `+ x( r/ u( H9 B( B# A+ ]
Or just the weight of the water? 公仔箱論壇3 q8 P/ r' i" m* F; n3 a5 v7 u
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Answer:
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It only needs to be designed to withstand the weight of  the water!
  ^4 G- j1 N1 ~3 `& l9 QWhy? 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
9 s0 ]# ?. u( F9 z; W, m( mThe 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.6 C3 p$ F' x$ z
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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. _  {  u* r0 D9 `! zConstruction 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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! O) I, n0 [; ^# Y7 f公仔箱論壇[attach]1486500[/attach]
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[attach]1486502[/attach]
  G$ [+ V$ h9 {& E5 B. B9 JTVBNOW 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。[attach]1486503[/attach]
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  ^3 `9 `* s; O/ Z5.39.217.77:8898[attach]1486505[/attach]* M& \8 Q) f$ [8 K8 p

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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。/ D8 G- B" F" p$ F; ?! ?
連通兩條水道的最初構思,而羅騰湖 Rothensee 升船機及大橋錨碇3 s& _( G! I% T1 J5 k
也於 1938 年安裝就位,但在二次大戰期間,建設工程被推遲。公仔箱論壇. O; S3 i, Q6 |! x7 ?/ X
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。
% }3 u: W. h. D% j, l# Y5.39.217.77:8898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。
) N6 B7 B- A2 v! ~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
: K- y% e& `9 V6 e+ e9 b; j" GTVBNOW 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。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。 3 L' N+ @; E+ i7 t
2003 年正式通航,水橋全長 918 公尺。 而 2003 年之前,在米德蘭運河和公仔箱論壇; q) N5 I, D  l; b+ g
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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