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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  R* Z% a/ Q% p2 P" i
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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!

$ z8 v* b9 ]: L& wtvb now,tvbnow,bttvb[attach]1486499[/attach]
, Z* ?2 c/ s- l& H6 mTVBNOW 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。1 m4 q; n! @8 i4 N+ X! `6 `; ?
Magdeburg Water Bridge in Germany  
What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering!
% b$ U! K$ u. O- Q6 WThis is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project. 8 }* w& p5 z' D
It is located in the city of Magdeburg, near Berlin.

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- f& g5 z% x% \& gThe photo was taken on the day of inauguration.公仔箱論壇9 p# O' K9 T+ t# N7 A% F
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.
9 V+ X! e( P0 \6 T; b, S3 t) NTVBNOW 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。
+ L  i( g2 `# {& ~) c' v/ BTVBNOW 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。Question:
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! Q* }/ |5 S1 E6 m( k  MTVBNOW 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。Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,tvb now,tvbnow,bttvb9 u0 K, H7 h) ~6 {3 U
Or just the weight of the water?
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Answer:

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It only needs to be designed to withstand the weight of  the water! 5.39.217.77:88985 B7 P- H  g6 d3 `4 J  A3 O+ t' c
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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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。3 @! Z9 i9 v- M& h
The Incredible Magdeburg Water Bridge in Germany
4 }3 w6 Y+ R. X' i公仔箱論壇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. tvb now,tvbnow,bttvb, }* p& R( M4 Y; L2 g! p
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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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( W8 M' E5 H  r, `! S3 r! K& j5.39.217.77:8898TVBNOW 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。0 e* ?3 f7 B( O+ w: s
[attach]1486500[/attach]
+ N; h5 s7 ]; B; L- v5.39.217.77:8898[attach]1486501[/attach]tvb now,tvbnow,bttvb# n/ g6 V0 s  w! G& G
[attach]1486502[/attach]
0 J& J6 R4 m; R# Q/ c/ P5.39.217.77:8898[attach]1486503[/attach]5.39.217.77:8898) d8 F7 G+ d4 U6 C8 h9 Y# p
[attach]1486504[/attach]tvb now,tvbnow,bttvb" ]) N( w& ]8 C
[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tvb now,tvbnow,bttvb- Z$ b, V) j) b- ]8 q
連通兩條水道的最初構思,而羅騰湖 Rothensee 升船機及大橋錨碇
1 C1 A; A+ E0 e6 G4 P" n& }& ~$ |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) d9 U5 t! ~+ v! ?5 b: B0 A
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。
: B  t8 t. O3 E# E' ~( a4 {tvb now,tvbnow,bttvb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。
& V; t7 K5 P4 a9 L公仔箱論壇於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. N- e1 _. Z7 _" B4 \+ @1 ]6 _0 t
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。 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。* {- A6 U3 ]# a6 V9 D
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
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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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