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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
$ D' F$ K$ R# L! g7 H公仔箱論壇
& s1 y# R- t1 |# a; o公仔箱論壇If you are not a Physics person, read on and learn a fact of physics.   ! q& e+ x* \& U2 J
AMAZING!
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* P$ y8 j/ h% }" J$ q" E' w9 @; pEven after you see it, it is still hard to believe!
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。  h2 |+ z) f( p+ x
[attach]1486499[/attach]
6 W  D. I4 H0 _# C2 I; [% S5.39.217.77:8898TVBNOW 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。$ o1 B9 ^7 q; h( d2 k) o% x
Magdeburg Water Bridge in Germany  
What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering! 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。' }6 o# k/ u# q0 |7 Q3 h9 Q/ S
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project.
  G% h7 D( V) Q1 Y5 m  i; d8 ?It is located in the city of Magdeburg, near Berlin.
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9 {! [/ u$ b+ e( YThe photo was taken on the day of inauguration.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" l# S' \
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.公仔箱論壇' Z# U; D8 z: f$ X
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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,
5 ?9 {' h" c* h( I# \, `公仔箱論壇Or just the weight of the water? 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。  X6 o0 o5 v8 H2 U( }5 R
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Answer:

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) p" q) X- l: q- m# k& Otvb now,tvbnow,bttvbIt only needs to be designed to withstand the weight of  the water! + d. A. w, g* j6 w
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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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。( B4 h1 u4 L2 f+ N0 e4 H9 k
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. 8 S- ^: l5 ?1 |- {6 [
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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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4 Z& ]0 `: k+ h6 z8 ~- n( G  RTVBNOW 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]
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[attach]1486502[/attach]
% g$ b" w1 y4 P! e8 l' w# Jtvb now,tvbnow,bttvb[attach]1486503[/attach]
- T8 N7 D5 }7 x2 h; _+ J[attach]1486504[/attach]tvb now,tvbnow,bttvb2 ~& `* l; H9 x, {5 R
[attach]1486505[/attach]公仔箱論壇2 O) k) }7 {: M) y- g2 c8 Q
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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
) a& @7 q' y8 F: T' `& \連通兩條水道的最初構思,而羅騰湖 Rothensee 升船機及大橋錨碇$ u2 m+ R3 T* x
也於 1938 年安裝就位,但在二次大戰期間,建設工程被推遲。tvb now,tvbnow,bttvb" ^! U% \+ q5 z6 i' |5 }
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。
& z+ F' f: g' t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。公仔箱論壇: C9 q7 J  V9 K; O0 x+ l; H
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
$ J+ s; O1 h- z7 \" J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。
% _) I. I. B* P. {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$ `! R7 O+ Z0 n$ N; D* i
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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