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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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7 Y3 s+ P) Z& P4 A+ |If you are not a Physics person, read on and learn a fact of physics.   
1 i! e6 U5 m4 r/ J( wAMAZING!

3 ~7 [$ S% }- H3 {- [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+ i+ k  ]$ s2 @% q% B
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!
3 y& B. \% |7 Y1 ptvb now,tvbnow,bttvbThis is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project. tvb now,tvbnow,bttvb# L+ O9 s. }: s2 Y7 k5 N
It is located in the city of Magdeburg, near Berlin.

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) V' s6 i0 q- ?- G: C# X/ p5.39.217.77:8898The photo was taken on the day of inauguration.公仔箱論壇8 A4 U! D: ^# L) o
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.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。  i1 T& Y' c9 u! O/ m9 g+ W4 P

* q1 [9 a: w; ]- i2 O4 HTVBNOW 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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' s9 G) P& R5 {8 N% d# f6 P8 ~5.39.217.77:8898Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,
. W2 r: Y  x5 E' CTVBNOW 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。Or just the weight of the water?
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+ l7 D$ \/ r/ }# a. L4 Ytvb now,tvbnow,bttvbAnswer:
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It only needs to be designed to withstand the weight of  the water! 9 ?1 X6 h% T, w- Y$ }
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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+ v( e: M& y; 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。
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The Incredible Magdeburg Water Bridge in Germany公仔箱論壇% y, a& `+ \+ @* Y/ @" I0 H% l4 A  e
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. $ E0 O+ I1 k6 c& }( b. F* W2 ~
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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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1 O9 }9 g9 q4 h8 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]5 ^# j: k- Y  c- T; d5 s
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& L! n! T2 P0 B: b  x1 D; l5.39.217.77:8898[attach]1486502[/attach]
9 L' V* U7 W' ]6 g( C8 v9 |' B/ p4 Y公仔箱論壇[attach]1486503[/attach]公仔箱論壇* O& K7 L( ?) I; b6 j7 i8 `, \( s
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* d# N1 l; m9 I8 I% e* M7 C* 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。[attach]1486505[/attach]
% m# K7 I6 F4 T, k2 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。
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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5.39.217.77:8898' p. ?8 e8 p2 {, ~$ X% 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- t9 G( o' f3 Z. B) K
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: Q3 o6 n) q+ |2 P. [" x6 B& 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。5.39.217.77:8898/ B+ R8 F  E- |6 w$ k
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。4 L6 V, m& j, b2 ^
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tvb now,tvbnow,bttvb& A# M$ v( r, D% j8 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。
2 g1 O# h: v: N0 E. h2 N$ V5.39.217.77:88982003 年正式通航,水橋全長 918 公尺。 而 2003 年之前,在米德蘭運河和
7 d) o& M/ _3 t! E( k+ ]4 R/ Y( N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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