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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 公仔箱論壇0 g& z% z. [6 @9 c0 H$ p. `4 t
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If you are not a Physics person, read on and learn a fact of physics.   tvb now,tvbnow,bttvb4 L% `4 A, }9 g2 L/ x3 y9 L
AMAZING!

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Even after you see it, it is still hard to believe!
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[attach]1486499[/attach]
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Magdeburg Water Bridge in Germany  
What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering!
5 }/ o8 ?0 T+ y, V9 kThis is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project. . S, ^2 K$ U6 x
It is located in the city of Magdeburg, near Berlin.

" c$ l1 M: v$ u8 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。tvb now,tvbnow,bttvb3 Q" D* g) l$ L: |, s& Z& G. i
The photo was taken on the day of inauguration.
5 ^1 R5 k) Y4 @& T! c7 Etvb now,tvbnow,bttvbTo those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.
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Question:
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公仔箱論壇6 x: v4 c! u7 ~' D% t
Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,公仔箱論壇& X5 H! p, {  W' S' F+ l
Or just the weight of the water?
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Answer:

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1 z3 h4 m: p9 o, zIt only needs to be designed to withstand the weight of  the water!
+ O1 A- W: b0 D8 G2 U5.39.217.77:8898Why? 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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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 U1 W2 U* w# v0 v  e. \1 ^

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The Incredible Magdeburg Water Bridge in Germany公仔箱論壇6 B- S) L. E4 m, p
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.) U, \4 a$ W1 I6 F2 l4 H2 |/ v
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. 8 G: p/ _, o3 }* T* m
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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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' E5 a* w8 j6 E* x+ A2 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。[attach]1486500[/attach]5.39.217.77:8898: |# y: Y% ?/ g% _
[attach]1486501[/attach]
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[attach]1486503[/attach]
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[attach]1486505[/attach]
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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; B. o# M! D5 o- ~" D! ?1 c) I
連通兩條水道的最初構思,而羅騰湖 Rothensee 升船機及大橋錨碇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。" `! f" _5 ^7 w
也於 1938 年安裝就位,但在二次大戰期間,建設工程被推遲。
# C! x5 i) s. [) N2 r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。5.39.217.77:8898/ ?% r! B2 P8 ^% ]
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。
' Q. [0 \# B- F' Qtvb now,tvbnow,bttvb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 萬5.39.217.77:8898, R  B' r, C7 I9 Q9 {5 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。 公仔箱論壇9 ~1 }# A( r( {: A) |3 i
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
# [$ I( U0 H( q) `/ h. q1 M' w$ _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。
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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