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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
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If you are not a Physics person, read on and learn a fact of physics.   
; R( o! }/ ]& j  m! r6 F  i" xAMAZING!
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。  t# i# _8 F" \/ y& h) Z2 o0 [

5 `. Y/ Z' B5 v( \tvb now,tvbnow,bttvbEven after you see it, it is still hard to believe!
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5.39.217.76) ~# |: `" I/ I8 j) y( U

: T2 D2 G# b; H* Z; Q; i公仔箱論壇Magdeburg Water Bridge in Germany  
What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering!
% m; k3 N( |- U9 L1 h+ z6 ztvb 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.
4 ~$ U9 N6 u5 @; z+ y# ?5.39.217.76It is located in the city of Magdeburg, near Berlin.

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The photo was taken on the day of inauguration.
! c: u, K9 J3 A- d2 l# w7 \+ E0 ptvb now,tvbnow,bttvbTo those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.公仔箱論壇4 {5 r( g& G) b
公仔箱論壇% `6 `! H6 _* F% d3 A1 J
Question:
公仔箱論壇1 E& ~0 N% a  h$ P) A

" q) @  e  U5 Y/ g公仔箱論壇Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,
& k; h  c/ G) G8 z7 Y公仔箱論壇Or just the weight of the water? : L& {) g' _% K0 X

; a# O0 s" O( `3 v" D5 @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。Answer:
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It only needs to be designed to withstand the weight of  the water!
9 L9 u# T# j$ K2 S5.39.217.76Why? A ship always displaces an amount of water that weighs the same as the ship, regardless of how heavily a ship may be loaded

' M' e. t/ g% d4 Z公仔箱論壇3 w; _1 c6 U3 l$ p/ o
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。* A' s( [# D1 ]. |" |0 i, a/ o
The Incredible Magdeburg Water Bridge in Germany
' d/ D  u2 u+ m; `" ?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。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.
7 F& e& m7 Y% X: k) v! Z$ T5.39.217.76
* ^: T+ F# c4 D7 y& 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。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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  l2 e4 D. q; T- O5.39.217.76! _( k& K* N- X* p/ l

) R" a; X  F  H5 H" u, |) M" b# btvb now,tvbnow,bttvbTVBNOW 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。" H4 f+ N+ N& e+ P

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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公仔箱論壇  `, Q, j2 ~0 L9 `. D9 n
連通兩條水道的最初構思,而羅騰湖 Rothensee 升船機及大橋錨碇
' _& t4 O* q) G  r8 m; I$ H! A也於 1938 年安裝就位,但在二次大戰期間,建設工程被推遲。
. ^( j9 i& f% ?5.39.217.76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。
/ n9 [$ r1 h, O5 j1 C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。* z1 @0 ?  Z! t, w: W9 N
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 萬8 ^/ f1 i0 p: h  y1 p" O
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。 5.39.217.76. ~% q( e2 j% ^) F
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
" u% x" E# Q8 s: q9 T7 P" Y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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