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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$ H+ a2 P  [2 [0 a8 G: N6 [+ U

3 h* a, q( f- u9 ?* vTVBNOW 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。If you are not a Physics person, read on and learn a fact of physics.   
+ ?8 N$ h8 O8 H$ n+ Y9 f公仔箱論壇AMAZING!

3 ~! J0 n) j& G! ?6 _* V) @9 j5 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。5.39.217.765 t4 O7 _% u4 A7 V! w: A5 v; t
Even after you see it, it is still hard to believe!

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( C2 H0 x7 K. N$ r) x5.39.217.76Magdeburg Water Bridge in Germany  
What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering! tvb now,tvbnow,bttvb" M8 m: _% u( T, f  D  B& l' U
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project. 公仔箱論壇3 P. ~$ }$ V5 V7 Y/ `, K
It is located in the city of Magdeburg, near Berlin.
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/ s, n' P! ^9 j) u/ F

( O1 y2 H" M1 Y4 b0 {The photo was taken on the day of inauguration.
* ~6 W& L! |. N* c1 U" mTo those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.
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Question:
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+ [7 t4 V4 G7 A5 R( `; N1 ctvb now,tvbnow,bttvbDid that bridge have to be designed to withstand the additional weight of ship and barge traffic,
, v. V* u- l6 H0 l8 Y) Z: [6 P: Y5.39.217.76Or just the weight of the water? 0 Y7 N: X+ |& W6 v7 m' K
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Answer:
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It only needs to be designed to withstand the weight of  the water! tvb now,tvbnow,bttvb; _3 V; T: Z5 E! |9 V: T' _
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。  a1 r; [1 b6 ~6 j, l. D! \# }
The Incredible Magdeburg Water Bridge in Germany
: m! n4 N9 s' U9 I! V( q3 TThe 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.tvb now,tvbnow,bttvb. V4 |9 N- ?5 Z1 B
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. 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。) \* W! b" c# B/ [7 G9 T

4 R8 ^) E/ P5 l3 T9 yConstruction 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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3 Z0 w8 F- o. ?$ R) qTVBNOW 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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$ n+ o9 j* B$ K+ w* dtvb now,tvbnow,bttvb
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5.39.217.76+ i, M* v, T# n( s+ l/ |
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平壤核子能源研究所
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* n3 @$ h4 `( u! a
連通兩條水道的最初構思,而羅騰湖 Rothensee 升船機及大橋錨碇
+ c; p$ p- K2 G* C+ a; M4 Vtvb now,tvbnow,bttvb也於 1938 年安裝就位,但在二次大戰期間,建設工程被推遲。
. E7 X+ }8 |- N: Itvb now,tvbnow,bttvb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。
: Q( f' @% S% v( I8 I$ Ntvb 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。
. V5 V( S7 B& T. W0 R- G0 |: 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 A1 \: c0 ^; t# l, O; y$ ]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。
, Q; x% q0 [) P/ i2003 年正式通航,水橋全長 918 公尺。 而 2003 年之前,在米德蘭運河和5.39.217.76) T) o3 b$ G- b9 T5 `( A1 A
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。
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  • k23bb

多谢您的分享!
first time heard & saw it, thanks for sharing, thanks tvboxnow!!
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