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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
2 |7 a2 D+ H$ W0 q公仔箱論壇
" i/ {* y  _4 ]- o7 {6 G6 ctvb now,tvbnow,bttvbIf you are not a Physics person, read on and learn a fact of physics.   
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6 w0 d% y& ^8 r4 M% s& ]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。Even after you see it, it is still hard to believe!
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[attach]1486499[/attach]
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9 V0 T) M) [  ]+ I8 @" `Magdeburg Water Bridge in Germany  
What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering!
5 Q6 p3 v* U, f8 E5.39.217.77:8898This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project. ) P. y0 m5 n& f: N6 V! V- i' h
It is located in the city of Magdeburg, near Berlin.

8 }# X1 N7 F4 G: K9 x' T4 Y5.39.217.77:8898
+ G/ X$ w  ]4 c2 |2 t9 E/ fTVBNOW 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。The photo was taken on the day of inauguration.1 X2 W7 A# s, Z
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.
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/ S/ y  s. k/ I9 jQuestion:

1 o1 L7 x0 U: e* Z0 u* Jtvb now,tvbnow,bttvb
. p. u  e. e! t) C& \tvb now,tvbnow,bttvbDid that bridge have to be designed to withstand the additional weight of ship and barge traffic,
+ s6 H2 F& d' G7 K& j6 _Or just the weight of the water? 5.39.217.77:8898" }: k: M/ T9 B2 {8 U+ d

% |6 a* z2 p! \& Wtvb now,tvbnow,bttvbAnswer:

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It only needs to be designed to withstand the weight of  the water! tvb now,tvbnow,bttvb% B# v0 k/ Q: e2 h4 ^1 y- j
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

( X' ^5 _9 Y9 i# I, B& K; A. xTVBNOW 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。$ h0 f+ k. \( u( W. m

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The Incredible Magdeburg Water Bridge in Germany
% W- r- K3 g* ^, f4 p4 m0 m" n% TTVBNOW 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。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7 H2 j8 o; W& q8 W
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. 5.39.217.77:8898' {, t/ T/ v1 F
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。" m, O5 X1 r. ]8 c4 j+ [
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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  n- M, M/ A% `% h2 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。5.39.217.77:8898. U9 K2 J7 F9 L9 E
[attach]1486500[/attach]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。+ d6 K- _2 u+ Z$ Y
[attach]1486501[/attach]公仔箱論壇' T1 i$ y0 {% N: O- @6 y
[attach]1486502[/attach]
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+ g" V) z& b" J9 o[attach]1486504[/attach]公仔箱論壇( O( t$ i% f  z$ Z- 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/ [# I* o! j4 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
* z# E( b+ j7 u( a1 I6 \5.39.217.77:8898也於 1938 年安裝就位,但在二次大戰期間,建設工程被推遲。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。. C% \6 e3 }) {
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; O' X. V& n" ^4 l/ K- d
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。  x/ z: b( {+ R7 i7 I6 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 萬5.39.217.77:88988 j! Z: a( @% L9 X& A- M0 Q
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。
% b( [; a0 h; d* K2 Z  u' z5.39.217.77:88982003 年正式通航,水橋全長 918 公尺。 而 2003 年之前,在米德蘭運河和
8 W8 w7 j! ^# i' q+ M$ @5 U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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